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Medical Compass

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It's best to not eat right before bedtime and to avoid 'midnight snacks.' METRO photo
Salt use increases risk 70 percent

By David Dunaief, M.D.

Dr. David Dunaief

While occasional heartburn and regurgitation are common after a large meal, for some, this reflux results in more serious disease. Let’s look at the differences and treatments.

Reflux typically results in symptoms of heartburn and regurgitation, with stomach contents going backward up the esophagus. For some reason, the lower esophageal sphincter, the valve between the stomach and esophagus, inappropriately relaxes. No one is quite sure why it happens with some people and not others. Of course, a portion of reflux is physiologic (normal functioning), especially after a meal (1). As such, it typically doesn’t require medical treatment.

Gastroesophageal reflux disease (GERD), on the other hand, differs in that it’s long-lasting and more serious, affecting as much as 28 percent of the U.S. population (2). This is one reason pharmaceutical firms give it so much attention, lining our drug store shelves with over-the-counter and prescription solutions.

GERD risk factors are diverse. They range from lifestyle — obesity, smoking cigarettes and diet — to medications, like calcium channel blockers and antihistamines. Other medical conditions, like hiatal hernia and pregnancy, also contribute (3). Dietary triggers include spicy, salty, or fried foods, peppermint, and chocolate.

Smoking and salt increase risk

One study showed that both smoking and salt consumption added to the risk of GERD significantly (4). Risk increased 70 percent in people who smoked. Surprisingly, people who used table salt regularly saw the same increased risk as seen with smokers.

Medication options

The most common and effective medications for the treatment of GERD are H2 receptor blockers (e.g., Zantac and Tagamet), which partially block acid production, and proton pump inhibitors (e.g., Nexium and Prevacid), which almost completely block acid production (5). Both classes of medicines have two levels: over-the-counter and prescription strength. Here, I will focus on proton pump inhibitors (PPIs), for which more than 90 million prescriptions are written every year in the U.S. (6).

The most frequently prescribed PPIs include Prilosec (omeprazole) and Protonix (pantoprazole). They have demonstrated efficacy for short-term use in the treatment of Helicobacter pylori-induced (bacteria overgrowth in the gut) peptic ulcers, GERD symptoms and complication prevention and gastric ulcer prophylaxis associated with NSAID use (aspirin, ibuprofen, etc.) as well as upper gastrointestinal bleeds.

However, they are often used long-term as maintenance therapy for GERD. PPIs used to be considered to have mild side effects. Unfortunately, evidence is showing that this may not be true. Most of the data in the package inserts is based on short-term studies lasting weeks, not years. The landmark study supporting long-term use approval was only one year, not 10 years. However, maintenance therapy usually continues over many years.

Side effects that have occurred after years of use are increased risk of bone fractures and calcium malabsorption; Clostridium difficile, a bacterial infection in the intestines; potential vitamin B12 deficiencies; and weight gain (7).

PPI risks

The FDA warned that patients who use PPIs may be at increased risk of a bacterial infection called C. difficile. This is a serious infection that occurs in the intestines and requires treatment with antibiotics. Unfortunately, it only responds to a few antibiotics and that number is dwindling. In the FDA’s meta-analysis, 23 of 28 studies showed increased risk of infection. Patients need to contact their physicians if they develop diarrhea when taking PPIs and the diarrhea doesn’t improve (8).

Suppressing hydrochloric acid produced in the stomach over long periods of time may result in malabsorption issues. In a study where PPIs were associated with B12 malabsorption, it usually took at least three years’ duration to cause this effect. B12 was not absorbed properly from food, but the PPIs did not affect B12 levels from supplementation (9). Therefore, if you are taking a PPI chronically, it is worth getting your B12 and methylmalonic acid (a metabolite of B12) levels checked and discussing supplementation with your physician for a deficiency.

Fiber and exercise

A number of modifications can improve GERD, such as raising the head of the bed about six inches, not eating prior to bedtime and obesity treatment, to name a few (10). In the same study already mentioned with smoking and salt, fiber and exercise both had the opposite effect, reducing the risk of GERD (5). The analysis by Journal Watch suggests that the fiber effect may be due to its ability to reduce nitric oxide production, a relaxant for the lower esophageal sphincter (11).

Obesity’s impact

In one study, obesity exacerbated GERD. What was interesting about the study is that researchers used manometry, which measures pressure, to show that obesity increases the pressure on the lower esophageal sphincter significantly (12). Intragastric (within the stomach) pressures were higher in both overweight and obese patients on inspiration and on expiration, compared to those with normal body mass index. This is yet another reason to lose weight.

Late night eating triggers 

Though it may be simple, it is one of the most powerful modifications we can make to avoid GERD. A study that showed a 700 percent increased risk of GERD for those who ate within three hours of bedtime, compared to those who ate four hours or more prior to bedtime. Of note, this is 10 times the increased risk of the smoking effect (13). Therefore, it is best to not eat right before bedtime and to avoid “midnight snacks.”

Although there are a number of ways to treat GERD, the most comprehensive have to do with modifiable risk factors. Drugs have their place in the arsenal of choices, but lifestyle changes are the first — and most effective — approach in many instances. Consult your physician before stopping PPIs, since there may be rebound hyperacidity (high acid produced) if they are stopped abruptly.

References:

(1) Gastroenterol Clin North Am. 1996;25(1):75. (2) Gut. 2014 Jun; 63(6):871-80. (3) emedicinehealth.com. (4) Gut 2004 Dec.; 53:1730-1735. (5) Gastroenterology. 2008;135(4):1392. (6) Kane SP. Proton Pump Inhibitor, ClinCalc DrugStats Database, Version 2021.10. Updated September 15, 2021. Accessed October 12, 2021. (7) World J Gastroenterol. 2009;15(38):4794–4798. (8) www.FDA.gov/safety/medwatch/safetyinformation. (9) Linus Pauling Institute; lpi.oregonstate.edu. (10) Arch Intern Med. 2006;166:965-971. (11) JWatch Gastro. Feb. 16, 2005. (12) Gastroenterology 2006 Mar.; 130:639-649. (13) Am J Gastroenterol. 2005 Dec.;100(12):2633-2636.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Understand your risk profile and design a screening plan with your physician

By David Dunaief, M.D.

Dr. David Dunaief

Get out your pink attire, because October is Breast Cancer Awareness Month.

The most common cancer diagnosed in U.S. women, an estimated 30 percent of 2021 cancer diagnoses in women will be breast cancer (1). Of these, 85 percent of cases occur in those with no family history of the disease, and 85 percent of new cases will be invasive breast cancer.

A primary objective of raising awareness is to promote screening for early detection. While screening is crucial, prevention should be just as important, including primary prevention, preventing the disease from occurring, and secondary prevention, preventing recurrence.

Here, we will discuss current screening recommendations, along with tools to lower your risk.

At what age and how often should we be screened?

Here is where divergence occurs; experts don’t agree on age and frequency. The U.S. Preventive Services Task Force currently recommends mammograms every other year, from age 50 through age 74, with the option of beginning as early as age 40 for those with significant risk (2). It’s important to note that these guidelines, published in 2016, are currently being refined and are pending publication.

The American College of Obstetricians and Gynecologists recommends consideration of beginning annual or biennial mammograms at 40, but starting no later than 50, and continuing until age 75. They encourage a process of shared decision-making between patient and physician to determine age and frequency of exams, including whether to continue after age 75 (3).

The American Cancer Society’s physician guidelines are to offer a mammogram beginning at age 40 and recommend annual or biennial exams from 45 to 54, with biennial exams after 55 until life expectancy is less than 10 years (4).

While the recommendations may seem nuanced, it’s important to consult with your physician to determine your risk profile and plan or revise your regular screening schedule accordingly.

Do bisphosphonates help?

Bisphosphonates include Fosamax (alendronate), Zometa (zoledronic acid) and Boniva (ibandronate) and are used to treat osteoporosis. Do they have a role in breast cancer prevention? It depends on the population, and it depends on study quality.

In a meta-analysis involving two randomized controlled trials (RCTs), FIT and HORIZON-PFT, results showed no benefit from the use of bisphosphonates in reducing breast cancer risk (5). The study population involved 14,000 postmenopausal women from ages 55 to 89 women who had osteoporosis, but who did not have a personal history of breast cancer. In other words, the bisphosphonates were being used for primary prevention.

In a more recent meta-analysis of 10 studies with over 950,000 total participants, results showed that bisphosphonates did indeed reduce the risk of primary breast cancer in patients by as much as 12 percent (6). However, when the researchers dug more deeply into the studies, they found inconsistencies in the results between observational and case-control trials versus RCTs, along with an indication that longer-term use of bisphosphonates is more likely to be protective than use of less than one year.

Randomized controlled trials are better designed than observational trials. Therefore, it is more likely that bisphosphonates do not work in reducing breast cancer risk in patients without a history of breast cancer or, in other words, in primary prevention.

A Lancet metanalysis focused on breast cancer recurrence in distant locations, including bone, and survival outcomes did find benefits for postmenopausal women (7). A good synopsis of the research can be found at cancer.org.

How much exercise?

We know exercise is important in diseases and breast cancer is no exception. In an observational trial, exercise reduced breast cancer risk in postmenopausal women significantly (8). These women exercised moderately; they walked four hours a week over a four-year period. If they exercised previously, five to nine years ago, but not recently, no benefit was seen. The researchers stressed that it is never too late to begin exercise.

Only about one-third of women get the recommended level of exercise every week: 30 minutes for five days a week. Once diagnosed with breast cancer, women tend to exercise less, not more. We need to expend as much energy and resources emphasizing exercise for prevention as we do screenings.

What about soy?

Contrary to popular belief, soy may be beneficial in reducing breast cancer risk. In a meta-analysis, those who consumed more soy saw a significant reduction in breast cancer compared to those who consumed less (9). There was a dose-response curve among three groups: high intake of >20 mg per day, moderate intake of 10 mg and low intake of <5 mg.

Those in the highest group had a 29 percent reduced risk, and those in the moderate group had a 12 percent reduced risk when compared to those who consumed the least. In addition, higher soy intake has been associated with reduced recurrence and increased survival for those previously diagnosed with breast cancer (10). The benefit from soy is thought to come from isoflavones, plant-rich nutrients.

Hooray for Breast Cancer Awareness Month stressing the importance of mammography and breast self-exams. However, we need to give significantly more attention to prevention of breast cancer and its recurrence. Through potentially more soy intake, as well as a Mediterranean diet and modest exercise, we may be able to accelerate the trend toward a lower breast cancer incidence.

References:

(1) breastcancer.org. (2) uspreventiveservicestaskforce.org. (3) acog.org. (4) cancer.org. (5) JAMA Intern Med. 2014;174(10):1550-1557. (6) Clin Epidemiol. 2019; 11: 593–603. (7) Lancet. 2015 Jul 23. (8) Cancer Epidemiol Biomarkers Prev. 2014 Sep;23(9):1893-902. (9) Br J Cancer. 2008; 98:9-14. (10) JAMA. 2009 Dec 9; 302(22): 2437–2443.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Fracture risk is not linked to steroid use

By David Dunaief, M.D.

Dr. David Dunaief

Eczema is a common skin condition in both children and adults. It’s estimated that over seven percent of the U.S. adult population is afflicted (1), with twice as many females as males affected (2). Ranging in severity from mild to moderate to severe, adults tend to have moderate to severe eczema.

The causes of eczema are unknown, but it is thought that nature and nurture are both at play (3). Essentially, it is a chronic inflammatory process that involves symptoms of itching, pain, rashes and redness (4).

While there is no cure, treatments for eczema run the gamut from over-the-counter creams and lotions to prescription steroid creams to oral steroids and injectable biologics. Some use phototherapy for severe cases, but the research on its effectiveness is scant. Antihistamines are sometimes used to treat the itchiness. Interestingly, lifestyle modifications, specifically diet, may play an important role.

Two separate studies have shown an association between eczema and fracture risk, which we will investigate further. Let’s look at the evidence.

Not just skin deep

Eczema may be related to broken bones, according to several studies. For example, one observational study of 34,500 patients showed that those with eczema had a 44 percent increased risk of injury causing limitation and an even more disturbing 67 percent risk of bone fracture and bone or joint injury for those 30 years and older (5).

And if you have both fatigue or insomnia and eczema, you are at higher risk for bone or joint injury than having one or the other alone. The researchers postulated that the use of corticosteroids in treatment could be one reason for increased fracture risk, in addition to chronic inflammation, which may also contribute to the risk of bone loss.

Steroids may weaken bone, ligaments and tendons and may cause osteoporosis by decreasing bone mineral density.

A recently published study of over 500,000 patients tested this theory and found that the association between major osteoporotic fractures and atopic eczema remained, even after adjusting for a range of histories with oral corticosteroids (6). Also, fracture rates were higher in those with severe atopic eczema.

For those who have eczema, it may be wise to have a DEXA (bone) scan.

Do supplements help?

There are two well-known supplements for helping to reduce inflammation, evening primrose oil and borage oil. Are these supplements a good replacement for – or addition to – medications? The research is really mixed, leaning toward ineffective – and with some concerns.

In a meta-analysis of seven randomized controlled trials, evening primrose oil was no better than placebo in treating eczema (7).

The researchers also looked at eight studies of borage oil and found there was no difference from placebo in terms of symptom relief. While these supplements only had minor side effects in the study, they can interact with other medications. For example, evening primrose oil in combination with aspirin can cause clotting problems (8).

But don’t look to supplements for significant help.

Injectable solutions

Dupilumab is a biologic monoclonal antibody (9). In trials, this injectable drug showed good results, improving outcomes for moderate to severe eczema sufferers when topical steroids alone were not effective. Like any drug therapy, it does have side effects.

Topical probiotics

There are also potentially topical probiotics that could help with atopic dermatitis. In preliminary in-vitro (in a test tube) studies, the results look intriguing and show that topical probiotics from the human microbiome (gut) could potentially work as well as steroids (10). Currently, additional trials are underway in children with the atopic dermatitis form of eczema (11). This may be part of the road to treatments of the future. However, this is in very early stage of development.

Dietary possibilities

In a Japanese study involving over 700 pregnant women and their offspring, results showed that when the women ate either a diet high in green and yellow vegetables, beta carotene or citrus fruit there was a significant reduction in the risk of the child having eczema of 59 percent, 48 percent and 47 percent, respectively, when comparing highest to lowest consumption quartiles (12).

Elimination diets may also play a role. One study’s results showed when eggs were removed from the diet in those who were allergic, according to IgE testing, eczema improved significantly (13).

From an anecdotal perspective, I have seen very good results when treating patients who have eczema with dietary changes. My patient population includes about 15 to 20 percent of patients who suffer some level of eczema. For example, a young adult had eczema mostly on the extremities. When I first met the patient, these were angry, excoriated, erythematous and scratched lesions. However, after several months of a vegetable-rich diet, the patient’s skin had all but cleared.

Eczema exists on a spectrum from annoying to significantly affecting a patient’s quality of life (14). Supplements may not be the solution, at least not borage oil or evening primrose oil. However, there may be promising topical probiotics ahead and medications for the hard to treat. It might be best to avoid long-term systemic steroid use, because of the long-term side effects. Lifestyle modifications appear to be very effective, at least at the anecdotal level.

References:

(1) J Inv Dermatol. 2017;137(1):26-30. (2) BMC Dermatol. 2013;13(14). (3) Acta Derm Venereol (Stockh) 1985;117 (Suppl.):1-59. (4) uptodate.com. (5) JAMA Dermatol. 2015;151(1):33-41. (6) J Allergy Clin Immunol Pract. 2021 Sep 24;S2213-2198(21)01018-7. (7) Cochrane Database Syst Rev. 2013;4:CD004416. (8) mayoclinic.org (9) Medscape.com. (10) ACAAI 2014: Abstracts P328 and P329. (11) nih.gov. (12) Allergy. 2010 Jun 1;65(6):758-765. (13) J Am Acad Dermatol. 2004;50(3):391-404. (14) Contact Dermatitis 2008; 59:43-47.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Studies show that running just 5 to 10 minutes each day may help reduce your risk of death from heart attacks, strokes, and other common diseases. Pixabay photo
Add quality years with modest lifestyle changes

By David Dunaief, M.D.

Dr. David Dunaief

The number of 90-year-olds is growing in the U.S. According to the National Institutes of Health, those who were more than 90 years old increased by 2.5 times over a 30-year period from 1980 to 2010 (1). This group is among what researchers refer to as the “oldest-old,” which includes those aged 85 and older.

What do these people have in common? According to one study, they tend to have fewer chronic morbidities or diseases. Thus, they tend to have a better quality of life with greater physical functioning and mental acuity (2).

In a study of centenarians, genetics played a significant role. Characteristics of this group were that they tended to be healthy and then die rapidly, without prolonged suffering (3). In other words, they grew old “gracefully,” staying mobile and mentally alert.

Factors that predict one’s ability to reach this exclusive club may involve both genetics and life-style choices. Let’s look at the research.

Get modest exercise

We are told repeatedly to exercise. Here’s one reason. Results of one study showed that 5 to 10 minutes of daily running, regardless of the pace, can have a significant impact on life span by decreasing cardiovascular and all-cause mortality (4).

Amazingly, even if participants ran fewer than six miles per week at a pace slower than 10-minute miles, and even if they ran only one to two days a week, there was still a decrease in mortality compared to nonrunners. Those who ran for this very short amount of time potentially added three years to their life span. There were 55,137 participants ranging in age from 18 to 100 years old.

An accompanying editorial to this study noted that more than 50 percent of people in the United States do not meet the current recommendation of at least 30 minutes of moderate exercise per day (5).

Reduce animal protein

A long-standing paradigm has been that we need to eat sufficient animal protein. However, cracks have developed in this theory, especially as it relates to longevity.

In an observational study using NHANES III data, results show that those who ate a high-protein diet (greater than 20 percent of calories from protein) had a twofold increased risk of all-cause mortality, a four-times increased risk of cancer mortality, and a four-times increased risk of dying from diabetes (6). This was over a considerable duration of 18 years and involved almost 7,000 participants ranging in age at the start of the study from 50 to 65.

However, this did not hold true if the protein source was plants. In fact, a high-protein plant diet may reduce the risks, not increase them. The reason, according to the authors, is that animal protein may increase insulin growth factor-1 and growth hormones that have detrimental effects on the body.

The Adventists Health Study 2 trial reinforced this data. It looked at Seventh-day Adventists, a group that emphasizes a plant-based diet, and found that those who ate animal protein once a week or less had a significantly reduced risk of dying over the next six years compared to those who were more frequent meat eaters (7). This was an observational trial with over 73,000 participants and a median age of 57 years old.

Reduce systemic inflammation

In the Whitehall II study, a specific marker for inflammation was measured, interleukin-6. The study showed that higher levels did not bode well for participants’ longevity (8). In fact, if participants had elevated IL-6 (>2.0 ng/L) at both baseline and at the end of the 10-year follow-up period, their probability of healthy aging decreased by almost half.

The good news is that inflammation can be improved significantly with lifestyle changes.

The takeaway from this study is that IL-6 is a relatively common biomarker for inflammation that can be measured with a simple blood test offered by most major laboratories. This study involved 3,044 participants over the age of 35 who did not have a stroke, heart attack or cancer at the beginning of the study.

The bottom line is that, although genetics are important for longevity, so too are lifestyle choices. A small amount of exercise and replacing animal protein with plant protein can contribute to a substantial increase in healthy life span. IL-6 may be a useful marker for inflammation, which could help predict healthy or unhealthy outcomes. Therefore, why not have a discussion with your doc-tor about testing to see if you have an elevated IL-6? Lifestyle modifications may be able to reduce these levels.

References:

(1) nia.nih.gov. (2) J Am Geriatr Soc. 2009;57:432-440. (3) Future of Genomic Medicine (FoGM) VII. Presented March 7, 2014. (4) J Am Coll Cardiol. 2014;64:472-481. (5) J Am Coll Cardiol. 2014;64:482-484. (6) Cell Metab. 2014;19:407-417. (7) JAMA Intern Med. 2013;173:1230-1238. (8) CMAJ. 2013;185:E763-E770.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Studies show that taking blood pressure medication at night lowers the risk of diabetes. METRO photo
Controlling sleep-time blood pressure may help

By David Dunaief, M.D.

Dr. David Dunaief

Our understanding of diabetes – its risks and treatment paradigms – is continually evolving. Because so many are affected by diabetes and prediabetes in the U.S., and because the potential health consequences, including significant cardiovascular risks, are so much greater in this population, studies frequently target this population.

To provide a sense of scale, the current rate of diabetes among the U.S. adult population is 13 per-cent, while another estimated 88 million U.S. adults have prediabetes, based on fasting glucose levels (HbA1C) of 5.7 to 6.4 percent (1).

For those with diabetes, cardiovascular risk and severity may not be equal between the sexes. In two trials, women with type 2 diabetes had greater cardiovascular risk than men. In one retrospective study, women with diabetes were hospitalized due to heart attacks at a more significant rate than men, though both had substantial increases in risk, 162 percent and 96 percent, respectively (2).

What may reduce risks of disease and/or complications? Fortunately, we are not without options. These include lifestyle modifications, timing of blood pressure medications, and, oddly, modest wine consumption.

Diet bests Metformin for prevention

All too often in the medical community, we are guilty of reaching for drugs and either overlooking lifestyle modifications or expecting that patients will fail with them. This is a disservice; lifestyle changes may be more effective in preventing this disease. In a head-to-head comparison study, diet plus exercise bested metformin for diabetes prevention (3). This study was performed over 15 years of duration in 2,776 participants who were at high risk for diabetes because they were over-weight or obese and had elevated sugars.

There were three groups in the study: those receiving a low-fat, low-calorie diet with 15 minutes of moderate cardiovascular exercise; those taking metformin 875 mg twice a day; and a placebo group. Diet and exercise reduced the risk of diabetes by 27 percent, while metformin reduced it by 18 percent over the placebo, both reaching statistical significance. Note that, while these are impressive results that speak to the use of lifestyle modification and to metformin, this is not an optimal diabetes diet.

Blood pressure medications’ timing

Interestingly, taking blood pressure medications at night has an odd benefit, lowering the risk of diabetes (4). In a study, there was a 57 percent reduction in the risk of developing diabetes in those who took blood pressure medications at night rather than in the morning.

It seems that controlling sleep-time blood pressure is more predictive of risk for diabetes than morning or 48-hour ambulatory blood pressure monitoring. This study had a long duration of almost six years with about 2,000 participants.

The blood pressure medications used in the trial were ACE inhibitors, angiotensin receptor blockers (ARBs) and beta blockers. The first two medications have their effect on the renin-angiotensin-aldosterone system (RAAS) of the kidneys.

According to the researchers, the drugs that blocked RAAS in the kidneys had the most powerful effect on preventing diabetes. Furthermore, when sleep systolic (top number) blood pressure was elevated one standard deviation above the mean, there was a 30 percent increased risk of type 2 diabetes.

Interestingly, the RAAS-blocking drugs are the same drugs that protect kidney function when patients have diabetes.

Reducing complications with wine?

Diabetes patients are often warned to limit or eliminate alcohol. A significant part of the reasoning relates to how the body metabolizes alcohol and sugars. So, the results of a study that showed small amounts of wine could have benefits in reducing diabetes-associated complications among those who were well-controlled sent ripples throughout the medical community.

The CASCADE trial, a randomized controlled trial, considered the gold standard of studies, shows wine may have heart benefits in well-controlled patients with type 2 diabetes by altering the lipid (cholesterol) profile (5).

Patients were randomized into three groups, each receiving a drink with dinner nightly. One group received five ounces of red wine, another five ounces of white wine, and the control group drank five ounces of water. Those who drank the red wine saw a significant increase in their “good chomlesterol” HDL levels, an increase in apolipoprotein A1 (the primary component in HDL) and a decrease in the ratio of total cholesterol-to-HDL levels compared to the water-drinking control arm. In other words, there were significant beneficial cardiometabolic changes.

White wine also had beneficial cardiometabolic effects, but not as great as red wine. However, white wine did improve glycemic (sugar) control significantly compared to water, whereas red wine did not. Also, slow metabolizers of alcohol in a combined red and white wine group analysis had better glycemic control than those who drank water. This study had a two-year duration and involved 224 patients. All participants were instructed to follow a Mediterranean-type diet.

Does this mean diabetes patients should start drinking wine? Not necessarily, because this is a small, though well-designed, study. Remember, participants were well-controlled type 2 diabetes patients who generally were nondrinkers.

We need to reverse the trend toward higher diabetes prevalence. Diet and exercise are the first line for prevention. Even a good, but nonideal, diet had better results than medication. A modest amount of wine, especially red, may have effects that reduce cardiovascular risk. Blood pressure medications taken at night, especially those that block RAAS in the kidneys, may help significantly to prevent diabetes.

References:

(1) cdc.gov. (4) Journal of Diabetes and Its Complications 2015;29(5):713-717. (3) Lancet Diabetes Endocrinol. Online Sept. 11, 2015. (4) Diabetologia. Online Sept. 23, 2015. (5) Ann Intern Med. 2015;163(8):569-579.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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By David Dunaief, M.D.

Dr. David Dunaief

Heart failure (HF) occurs when the heart’s pumping is not able to keep up with the body’s demands for blood and oxygen and may decompensate. Unlike a heart attack, which is acute, heart failure is a slowly developing disease that may take years to become symptomatic.

As of 2018, there were about 6.2 million Americans living with heart failure, and heart failure was a potential contributing factor in 13.4 percent of deaths (1).

There are two types of heart failure, systolic and diastolic. The basic difference is that the ejection fraction, the output of blood with each contraction of the left ventricle of the heart, is more or less preserved in diastolic HF, while it can be significantly reduced in systolic HF.

We have more evidence-based medicine, or medical research, on systolic heart failure. Fortunately, both types can be diagnosed with the help of an echocardiogram, an ultrasound of the heart. The signs and symptoms may be similar, as well, and include shortness of breath on exertion or when lying down, edema or swelling, reduced exercise tolerance, weakness and fatigue.

Major lifestyle risk factors for heart failure include obesity; smoking; poor diet, including consuming too much sodium; being sedentary; and drinking alcohol excessively. Pre-existing conditions that are significant risk factors include diabetes, coronary artery disease and high blood pressure.

Typically, heart failure is treated with blood pressure medications, such as beta blockers, ACE inhibitors and angiotensin receptor blockers. We are going to look at how diet, iron and the supplement CoQ10 impact heart failure.

Antioxidant diet’s impact

If we look beyond the usual risk factors mentioned above, oxidative stress may play an important role as a contributor to HF. Oxidative stress is thought to result in damage to the inner lining of the blood vessels, or endothelium, oxidation of cholesterol molecules and a decrease in nitric oxide, which helps vasodilate blood vessels.

In a population-based, prospective (forward-looking) study, called the Swedish Mammography Cohort, results show that a diet rich in antioxidants reduces the risk of developing HF (2). In the group that consumed the most nutrient-dense foods, there was a significant 42 percent reduction in the development of HF, compared to the group that consumed the least. According to the authors, the antioxidants were derived mainly from fruits, vegetables, whole grains, coffee and chocolate. Fruits and vegetables were responsible for the majority of the effect.

This nutrient-dense approach to diet increased oxygen radical absorption capacity. Oxygen radicals have been implicated in cellular and DNA damage, potentially as a result of increasing chronic inflammation. What makes this study so impressive is that it is the first of its kind to investigate antioxidants from the diet and their impacts on heart failure prevention.

This was a large study, involving 33,713 women, with good duration — follow-up was 11.3 years. There are limitations to this study, because it is observational and the population involved only women. Still, the results are very exciting, and it is unlikely there is a downside to applying this approach to the population at large.

CoQ10 benefits

Coenzyme Q10 is a substance produced by the body that helps the mitochondria (the powerhouse of the cell) produce energy. It is thought of as an antioxidant. 

Results of the Q-SYMBIO study, a randomized double-blind control trial, showed an almost 50 percent reduction in the risk of all-cause mortality and 50 percent fewer cardiac events with CoQ10 supplementation (3). This one randomized controlled trial followed 420 patients for two years who had severe heart failure. This involved using 100 mg of CoQ10 three times a day compared to placebo.

The lead author goes as far as to suggest that CoQ10 should be part of the paradigm of treatment. CoQ10 is the first supplement to show survival benefits in heart failure.

This study’s rigor is impressive; it assesses the supplement as if it were a drug. A subsequent 2019 sub-group analysis of Q-SYMBIO confirmed the short- and long-term effects and also found a significant improvement in left ventricular ejection fraction among CoQ10 therapy adherents (4).

A meta-analysis involving 13 studies of CoQ10 supplementation with HF confirmed that CoQ10 resulted in ejection fraction improvements among patients with less severe stages of HF, although the authors suggest that studies with more diverse demographics and that refine and compare dose responses are warranted (5). If you have heart failure, you may want to discuss CoQ10 supplementation with your physician.

Iron deficiency challenges

An observational study that followed 753 heart failure patients for almost two years showed that iron deficiency without anemia increased the risk of mortality in heart failure patients by 42 percent (6).

In this study, iron deficiency was defined as a ferritin level less than 100 μg/L (the storage of iron) or, alternately, transferrin saturation less than 20 percent (the transport of iron) with a ferritin level in the range 100–299 μg/L.

The authors conclude that iron deficiency is potentially more predictive of clinical outcomes than anemia, contributes to the severity of HF and is common in these patients. Thus, it behooves us to try to prevent heart failure through dietary changes, including high levels of antioxidants, because it is not easy to reverse the disease. Those with HF should have their ferritin and iron levels checked, for these are correctable.

Based on study results, CoQ10 appears to be a compelling therapy to reduce risk of further complications and potentially death. Consult with your doctor before taking CoQ10 or any other supplements.

References:

(1) cdc.gov. (2) Am J Med. 2013 Jun:126(6):494-500. (3) JACC Heart Fail. 2014 Dec;2(6):641-649. (4) Cardiol J. 2019;26(2):147-156. (5) Am J Clin Nutr. 2013 Feb; 97(2): 268–275. (6) Am Heart J. 2013;165(4):575-582.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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In recent studies, apples, bananas and pears were shown to reduce COPD. Pixabay photo
Lung health is affected by simple diet and exercise changes

By David Dunaief, M.D.

Dr. David Dunaief

The COVID-19 pandemic has raised many people’s awareness of the importance of lung function. Its consequences are especially severe for those with chronic obstructive lung diseases such as chronic obstructive pulmonary disease (COPD) and asthma, as well as those who smoke and vape.

What can we do to strengthen our lungs? We can improve lung function with simple lifestyle modifications including exercising, eating a plant-based diet with a focus on fruits and vegetables, expanding lung capacity with an incentive spirometer, and quitting smoking and vaping, which damage the lungs (1). Not only people with compromised lungs will benefit; studies suggest everyone will benefit.

COPD and diet

Several studies demonstrate that higher consumption of fiber from plants decreases the risk of COPD in smokers and ex-smokers. Bear with me, because the studies were done with men or women, not both at the same time. In one study of men, for example, results showed that higher fiber intake was associated with significant 48 percent reductions in COPD incidence in smokers and 38 percent incidence reductions in ex-smokers (3). The high-fiber group ate at least 36.8 grams per day, compared to the low-fiber group, which ate less than 23.7 grams per day. Fiber sources were fruits, vegetables and whole grain, essentially a whole foods plant-based diet. The high-fiber group was still below the American Dietetic Association-recommended 38 grams per day. This is within our grasp. 

In another study, women had a highly significant 37 percent decreased risk of COPD among those who consumed at least 2.5 serving of fruit per day compared to those who consumed less than 0.8 servings per day (4). The highlighted fruits shown to reduce COPD in both men and women included apples, bananas, and pears.

Asthma and diet

In a randomized controlled trial of asthma patients, results show that after 14 days those who ate a low-antioxidant diet had less lung function compared to those who ate a high-antioxidant diet (2). Researchers measured lung function with one-second forced expiratory volume (FEV1) and predicted forced vital capacity (FVC). 

Additionally, those who were in the low-antioxidant diet group also had higher inflammation at 14 weeks, as measured using a c-reactive protein (CRP) biomarker. Those who were in the low-antioxidant group also were over two-times more likely to have an asthma exacerbation.

The good news is that the difference in behavior between the high- and low-antioxidant groups was small. The high-antioxidant group had a modest five servings of vegetables and two servings of fruit daily, while the low-antioxidant group ate no more than two servings of vegetables and one serving of fruit daily. 

Carotenoid supplementation, instead of antioxidant foods, made no difference in inflammation. The authors concluded that an increase in carotenoids from diet has a clinically significant impact on asthma and can be seen in a very short period. 

Incentive spirometry

What is an incentive spirometer? It’s a device that helps expand the lungs by inhaling through a tube and causing a ball or multiple balls to rise. This opens the alveoli and may help you breathe better. 

Incentive spirometry has been used for patients with pneumonia, those who have chest or abdominal surgery and those with asthma or COPD, but it has also been useful for healthy participants (5). A small study showed that those who trained with an incentive spirometer for two weeks increased their vital capacity, right and left chest wall motion, and right diaphragm motion. This means it improved lung function and respiratory motion. Participants were 10 non-smoking healthy adults who were instructed to take five sets of five deep breaths twice a day, totaling 50 deep breaths per day. The brands used in the study are inexpensive and easily accessible, such as Teleflex’s Triflo II.

In another small, two-month study of 27 patients with COPD, the incentive spirometer improved blood gasses, such as partial pressure carbon dioxide and oxygen, in COPD patients with exacerbation (6). The authors concluded that it may improve quality of life for COPD patients.  

Exercise

Exercise can have a direct impact on lung function. In a study involving healthy women ages 65 years and older, results showed that 20 minutes of high-intensity exercise three times a day improved FEV1 and FVC, both indicators of lung function, in as little as 12 weeks (7). Participants began with a 15-minute warm-up, then 20 minutes of high-intensity exercise on a treadmill, followed by 15 minutes of cool-down with stretching.

What is impressive is that it was done in older adults, not those in their twenties and not in elite athletes.

Note that you don’t need a treadmill to do aerobic exercise. You can walk up steps or steep hills in your neighborhood, do jumping jacks, or even dance in your living room. Whatever you choose, you want to increase your heart rate and expand your lungs. If this is new for you, consult a physician and start slowly. You’ll find that your stamina improves rather quickly over time.

We all should be working to strengthen our lungs, regardless of COVID-19. This three-pronged approach of lifestyle modifications – diet, exercise and incentive spirometer – can help without expending significant time or expense.

References:

(1) Public Health Rep. 2011 Mar-Apr; 126(2): 158-159. (2) Am J Clin Nutr. 2012 Sep;96(3):534-43.(3)Epidemiology Mar 2018;29(2):254-260. (4)Int J Epidemiol Dec 1 2018;47(6);1897-1909. (5)Ann Rehabil Med. Jun 2015;39(3):360-365. (6)Respirology. Jun 2005;10(3):349-53.(7)J Phys Ther Sci. Aug 2017;29(8):1454-1457. 

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Stock photo
Excess fat contributes to increased inflammation

By David Dunaief, M.D.

Dr. David Dunaief

Obesity is an ongoing struggle for many in the United States. If you, like many, put on some extra pounds during the past 18 months, it’s even more concerning.

Obesity is a disease unto itself and is defined by a BMI (body mass index) of >30 kg/m2, but obesity can also be defined by excess body fat, which is more important than BMI.

Poor COVID-19 outcomes have been associated with obesity, especially in the U.S. In a study involving 5700 hospitalized COVID-19 patients in the NYC area, the most common comorbidities were obesity, high blood pressure and diabetes (1). Of those who were hospitalized, 41.7% were obese.

In a study in China, results showed that those who were overweight were 86 percent more likely to have severe COVID-19 pneumonia, and that percentage increases to 142 percent when obesity is reached (2).

In fact, one study’s authors suggested quarantining should be longer in obese patients because of the potential for prolonged viral shedding compared to those in the normal range for weight (3).

And though age is a risk factor for COVID-19, among those younger than 60 and obese, there is a two-times increased risk of being admitted to the hospital, according to a 3,615-patient study at NYU Langone Health (4).

While these studies do not test specifically for the more recent variants, I would expect the results are similar.

Why is risk for severe COVID-19 higher with obesity? 

According to the prevailing theory, obesity may interfere with mechanical aspects of breathing, thus increasing airway resistance and make gas in exchange more difficult in the lung. It may also impede on lung volume by exerting pressure on the lungs and may involve weaker muscles necessary for respiration (5).

Why is excess fat more important than BMI? 

First, some who have elevated BMI may not have a significant amount of fat; they may actually have more innate muscle. More than 25 percent of my patient population is “solidly built,” which means they have greater muscle mass as well as too much excess fat. Visceral fat is the most important, since it’s the fat that lines the organs, including the lungs.

For another, fat cells have adipokines, specific cell communicators found in fat cells that communicate with other fat cells but also other systems such as the brain, immune system, muscles, and liver. Adipokines can be mediators of both inflammation and insulin resistance, according to an endocrinology study (6). In a study of over 4,000 patients with COVID-19, the author suggests that inflammation among obese patients may be an exacerbating factor for hospitalizations and severe illness (7). 

If we defined obesity as being outside the normal fat range – normal ranges are roughly 11-22 percent for men and 22-34 percent for women – then close to 70 percent of Americans are obese.

Inflammation reduction and weight-loss combined

In a randomized controlled trial with 75 participants comparing a plant-based diet to a control diet, there was a greater than 14 lbs. weight reduction and roughly 10 lbs. fat reduction over a 14-week period (8). Of the weight lost, about 70 percent was excess fat. Remember, excess body fat, through adipokines, may be inflammatory and increase the risk of severe COVID-19. 

The weight reduction with a plant-based approach may involve the increase in fiber, reduction in dietary fat and increased burning of calories after the meal, according to Physician’s Committee for Responsible Medicine (PCRM) (9).

You also want a diet that has been shown to reduce inflammation.

We recently published a study involving 16 patients from my clinical practice. It shows that those who ate a whole food plant-based LIFE (low inflammatory foods everyday) diet over a seven-day period had a significant decrease in inflammation measured by hsCRP (high sensitivity c-reactive protein). This occurred in those who completely changed their diets to the LIFE diet, but also occurred in those who simply added a greens and fruit-based smoothie daily to their existing diet (10).

In my practice, I have seen a number of patients lose a substantial amount of weight, but also body fat, over a short period. For instance, a 70-year-old male lost 19 lbs. of weight and 12 lbs. of body fat over a six-week period. His inflammation, which was very high to start, dropped substantially to the border of optimal levels, using hsCRP as the inflammation measurement. This patient and many others have seen tandem reductions in both weight and inflammation. To boot, this was a cardiac patient whose cardiologist had considered a stent, but later said he did not need it after reducing his inflammation.

If the continuing COVID-19 concerns do not convince you that losing excess fat is important, then consider that obesity contributes to, or is associated with, many other chronic diseases like cardiovascular disease, high blood pressure, and high cholesterol, which also contribute to severe COVID-19. Thus, there is an imperative to lose excess body fat.

References:

(1) JAMA. online April 22, 2020. (2) Clin Med (Lond). 2020 Jul; 20(4): e109–e113. (3) Acta Diabetol. 2020 Apr 5: 1–6. (4) Clin Infect Dis. 2020 Jul 28;71(15):896-897. (5) Chron. Respir. Dis. 5, 233–242 (2008). (6) Front Endocrinol (Lausanne). 2013; 4:71. (7) MedRxiv.com. (8) Nutr Diabetes. 2018; 8: 58. (9) Inter Journal of Disease Reversal and Prevention 2019;1:1. (10) Am J of Lifestyle Med. online Oct. 5, 2020.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Photo courtesy of Brandpoint
Increased fall risk is a consequence of sleep apnea

By David Dunaief, M.D.

Dr. David Dunaief

Sleep is critical for physical and mental health, yet many struggle to get quality, restful sleep. For those with obstructive sleep apnea (OSA), quality sleep is elusive. This can cause serious physical and mental health impacts.

Sleep apnea is an abnormal pause in breathing that occurs at least five times an hour while sleeping and can be caused by either airway obstruction (OSA), brain signal failure (central sleep apnea), or a combination of these two (complex sleep apnea). Estimates indicate that approximately 30 million people suffer from sleep apnea in the United States (1). 

Here, our focus is on OSA, which can be classified as either mild, moderate or severe. It’s estimated that 80 percent of moderate and severe OSA are undiagnosed.

Risk factors for OSA include chronic nasal congestion, large neck circumference, excess weight or obesity, alcohol use, smoking and a family history (2). Fortunately, many of the risk factors are modifiable.

Significant symptoms of OSA include daytime fatigue, loud snoring, breathing cessation observed by another, impaired concentration and morning headaches. These symptoms, while significant, are not the worst problems. OSA is also associated with a list of serious consequences, such as cardiovascular disease, high blood pressure and depression.

Fortunately, we have an arsenal of treatment options, including continuous positive airway pressure (CPAP) devices; oral appliances; lifestyle modifications, such as diet, exercise, smoking cessation and reduced alcohol intake; and some medications.

Cardiovascular disease risk

In an observational study, the risk of cardiovascular mortality increased in a linear fashion with the severity of OSA (3). In other words, in those with mild-to-moderate untreated sleep apnea, there was a 60 percent increased risk of death; and in the severe group, this risk jumped considerably, 250 percent. However, the good news is that treating patients with CPAP considerably decreased their risk by 81 percent for mild-to-moderate patients and 45 percent for severe OSA patients. This study involved 1,116 women over a six-year duration.

Another observational study with male subjects showed similar risks of cardiovascular disease with sleep apnea and benefits of CPAP treatment (4). There were more than 1,500 men in this study with a 10-year follow-up. The authors concluded that severe sleep apnea increases the risk of nonfatal and fatal cardiovascular events, and CPAP was effective in stemming these occurrences.

In a third study, this time involving the elderly, OSA increased the risk of cardiovascular death in mild-to-moderate patients and in those with severe OSA by 38 and 125 percent, respectively (5). But, as in the previous studies, CPAP decreased the risk in both groups significantly. In the elderly, an increased risk of falls, cognitive decline and difficult-to-control high blood pressure may be signs of OSA.

Cancer association

In sleep apnea patients under age 65, a study showed an increased risk of cancer (6). The authors believe that intermittent low levels of oxygen, which are caused by the many frequent short bouts of breathing cessation during sleep, may be responsible for the development of tumors and their subsequent growth.

The greater the percentage of time patients spend in hypoxia (low oxygen) at night, the greater the risk of cancer. For those patients with more than 12 percent low-oxygen levels at night, there is a twofold increased risk of cancer development when compared to those with less than 1.2 percent low-oxygen levels.

Male sexual function

It appears that erectile dysfunction (ED) may also be associated with OSA. CPAP may decrease this incidence. This was demonstrated in a small study involving 92 men with ED (7). The surprising aspect of this study was that, at baseline, the participants were overweight, not obese, on average and were young, at 45 years old. In those with mild OSA, the CPAP had a beneficial effect in over half of the men. For those with moderate and severe OSA, the effect was still significant, though not as robust, at 29 and 27 percent, respectively.

Dietary approach

Although CPAP can be quite effective, it may not be well tolerated by everyone. In some of my patients, their goal is to discontinue their CPAP. Diet may be an alternative to CPAP, or may be used in combination with CPAP.

In a small study of those with moderate-to-severe OSA levels, a low-energy diet showed positive results. A low-energy diet implies a low-calorie approach, such as a diet that is plant-based and nutrient-rich. It makes sense, since weight loss is important. In the study, almost 50 percent of those who followed this type of diet were able to discontinue CPAP (8). The results endured for at least one year.

The bottom line is that if you think you or someone else is suffering from sleep apnea, it is very important to go to a sleep lab to be evaluated, and then go to your doctor for a follow-up. Don’t suffer from sleep apnea and, more importantly, don’t let obstructive sleep apnea cause severe complications, possibly robbing you of more than sleep. There are effective treatments.

References:

(1) sleepapnea.org. (2) JAMA. 2004;291(16):2013. (3) Ann Intern Med. 2012 Jan 17;156(2):115-122. (4) Lancet. 2005 Mar 19-25;365(9464):1046-1053. (5) Am J Respir Crit Care Med. 2012;186(9):909-916. (6) Am J Respir Crit Care Med. 2012 Nov. 15. (7) APSS annual meeting: abstract No. 0574. (8) BMJ. 2011;342:d3017.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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Eating a high-fiber breakfast cereal is a great way to start. METRO photo
Increasing fiber intake may help modulate the immune system

By David Dunaief, M.D.

Dr. David Dunaief

When the immune system attacks the body’s own organs, cells and tissues and causes chronic inflammation, we classify it as an autoimmune disease. However, this umbrella term refers to more than 80 different diseases (1). Some are familiar names, like type 1 diabetes, lupus, rheumatoid arthritis (RA), psoriasis, multiple sclerosis, and inflammatory bowel disease. Others, like Lambert-Eaton myasthenic syndrome and Cogan syndrome, are less well-known.

Chronic inflammation is the main consequence of immune system dysfunction, and it is the underlying theme tying these diseases together. Unfortunately, autoimmune diseases tend to cluster (2). Once you have one, you are at high risk for acquiring others. Autoimmune diseases disproportionately affect women, although men do also get them.

Drug treatments

The mainstay treatment is immunosuppressives. In RA, for example, where there is swelling of joints bilaterally, a typical drug regimen includes methotrexate and TNF (tumor necrosis factor) alpha inhibitors, like Remicade (infliximab). These therapies seem to reduce underlying inflammation by suppressing the immune system and interfering with inflammatory factors, such as TNF-alpha. Disease-modifying anti-rheumatic drugs (DMARDs), a class that also includes Plaquenil (hydroxychloroquine), may slow or stop the progression of joint destruction and increase physical functioning.

However, there are several concerning factors with these drugs. First, the side-effect profile is substantial. It includes the risk of cancers, opportunistic infections and even death, according to black box warnings (the strongest warning required by the FDA) (3). Opportunistic infections include diseases like tuberculosis and invasive fungal infections.

It is no surprise that suppressing the immune system would result in increased infection rates. Nor is it surprising that cancer rates would increase, since the immune system helps to fend off malignancies. In fact, a study showed that after 10 years of therapy, the risk of cancer increased by approximately fourfold with the use of immunosuppressives (4).

Second, these drugs were tested and approved using short-term clinical trials; however, many patients are prescribed these therapies for 20 or more years.

So, what other methods are available to treat autoimmune diseases? Medical nutrition therapy using bioactive compounds, which have immunomodulatory (immune system regulation) effects on inflammatory factors and on gene expression, and supplementation are being studied.

Nutrition and inflammation

Raising the level of beta-cryptoxanthin, a carotenoid bioactive food component, by a modest amount has a substantial impact in preventing RA. Several studies have also tested dietary interventions in RA treatment (5). Included were fasting followed by a vegetarian diet; a vegan diet; and a Mediterranean diet, among others. All mentioned here showed decreases in inflammatory markers, including CRP, and improvements in joint pain and other quality of life concerns.

Fish oil supplementation

Fish oil helps your immune system by reducing inflammation and improving your blood chemistry, affecting as many as 1,040 genes (6). In a randomized clinical study, 1.8 grams of eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA) supplementation had anti-inflammatory effects, suppressing cell signals and transcription factors (proteins involved with gene expression) that are pro-inflammatory, such as NFkB.

In RA patients, fish oil helps suppress cartilage degradative enzymes, while also having an anti-inflammatory effect (7). When treating patients with autoimmune disease, I typically suggest about 2 grams of EPA plus DHA to help regulate their immune systems. Don’t take these high doses of fish oil without consulting your doctor, since fish oil may have blood-thinning effects.

Probiotic supplements

The gut contains approximately 70 percent of your immune system. Probiotics, by populating the gut with live beneficial microorganisms, have immune-modulating effects that decrease inflammation and thus are appropriate for autoimmune diseases. Lactobacillus salvirus and Bifidobacterium longum infantis are two strains that were shown to have positive effects (8, 9).

In a study with Crohn’s disease patients, L. casei and L. bulgaricus reduced the inflammatory factor TNF-alpha (10). To provide balance, I recommend probiotics with Lactobacillus to my patients, especially with autoimmune diseases that affect the intestines, like Crohn’s and ulcerative colitis.

Fiber intake

Fiber has been shown to modulate inflammation by reducing biomarkers, such as CRP. In two separate clinical trials, fiber either reduced or prevented high CRP in patients. In one, a randomized clinical trial, 30 grams, or about 1 ounce, of fiber daily from either dietary sources or supplements reduced CRP significantly compared to placebo (11). In the second trial, which was observational, participants who consumed the highest amount of dietary fiber (greater than 19.5 grams) had reductions in a vast number of inflammatory factors, including CRP, interleukin-1 (IL-1), interleukin-6 (IL-6) and TNF-alpha (12).

Immune system regulation is complex and involves over 1,000 genes, as well as many biomarkers. Dysfunction results in inflammation and, potentially, autoimmune disease. We know the immune system is highly influenced by bioactive compounds found in high nutrient foods and supplements. Therefore, bioactive compounds may work in tandem with medications and/or may provide the ability to reset the immune system through immunomodulatory effects and thus treat and prevent autoimmune diseases.

References:

(1) niaid.nih.gov. (2) J Autoimmun. 2007;29(1):1. (3) epocrates.com. (4) J Rheumatol 1999;26(8):1705-1714. (5) Front Nutr. 2017; 4: 52. (6) Am J Clin Nutr. 2009 Aug;90(2):415-424. (7) Drugs. 2003;63(9):845-853. (8) Gut. 2003 Jul;52(7):975-980. (9) Antonie Van Leeuwenhoek 1999 Jul-Nov;76(1-4):279-292. (10) Gut. 2002;51(5):659. (11) Arch Intern Med. 2007;167(5):502-506. (12) Nutr Metab (Lond). 2010 May 13;7:42.

Dr. David Dunaief is a speaker, author and local lifestyle medicine physician focusing on the integration of medicine, nutrition, fitness and stress management. For further information, visit www.medicalcompassmd.com. 

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