Medical Compass: A roadmap to aggressive prevention of heart disease

Medical Compass: A roadmap to aggressive prevention of heart disease

Fruit, like these Sumo Citrus, is a good source of fiber. Photo by Heidi Sutton
Modest lifestyle changes have a resounding effect

By David Dunaief, M.D.

Dr. David Dunaief

We can significantly reduce the occurrence of heart disease, the number one killer in the United States, by making modest lifestyle changes.

According to the Centers for Disease Control and Prevention, there are 790,000 heart attacks annually and 210,000 of these occur in those who’ve already had a first heart attack (1). Here, I will provide specifics on how to make changes to protect you and your family from heart disease, regardless of family history.

The evidence continues to highlight lifestyle changes, including diet, as the most important factors in preventing heart disease. Changes that garner a big bang for your buck include the consumption of chocolate, legumes, nuts, fiber and omega-3 polyunsaturated fatty acids (PUFAs).

Chocolate effect

Chocolate lovers, this study is for you! Preliminary evidence shows that two pieces of chocolate a week may decrease the risk of a heart attack by 37 percent, compared to those who consume less (2). However, the authors warned against the idea that more is better. In fact, high fat and sugar content and calorically dense aspects may have detrimental effects when consumed at much higher levels. There is a fine line between potential benefit and harm. The benefits may be attributed to micronutrients referred to as flavonols.

I usually recommend that patients have one to two squares – about one-fifth to two-fifths of an ounce – of dark chocolate daily. Who says prevention has to be painful?

Role of fiber

Fiber has a dose-response relationship to reducing risk. In other words, the more fiber intake, the greater the reduction in risk. In a meta-analysis of 10 studies, results showed for every 10-gram increase in fiber, there was a corresponding 14 percent reduction in the risk of a cardiovascular event and a 27 percent reduction in the risk of heart disease mortality (3). The authors analyzed data that included over 90,000 men and 200,000 women.

The average American consumes about 16 grams per day of fiber (4). The Academy of Nutrition and Dietetics recommends 14 grams of fiber for each 1,000 calories consumed, or roughly 25 grams for women and 38 grams for men (5). Therefore, we can significantly reduce our risk of heart disease if we increase our consumption of fiber to reach the recommended levels. Good sources of fiber are whole grains and fruits.

Omega-3 fatty acids

In a study with over 45,000 men, there were significant reductions in coronary heart disease with omega-3 PUFAs. Both plant-based and seafood-based omega-3s showed these effects (7). Good sources of omega-3s from plant-based sources include nuts, such as walnuts, and ground flaxseed.

Your ultimate goal should be to become “heart attack proof,” a term used by Dr. Sanjay Gupta and reinforced by Dr. Dean Ornish. This requires a plant-based diet. The more significant the lifestyle modifications you make, the closer you will come to achieving this goal. But even modest changes in diet will result in significant reductions in risk.

Legumes’ impact

In a prospective (forward-looking) cohort study, the First National Health and Nutrition Examination Survey Epidemiologic Follow-up Study (NHEFS), legumes reduced the risk of coronary heart disease by a significant 22 percent. Those who consumed four or more servings per week, compared to those who consumed less than one serving, saw this effect. The legumes used in this study included beans, peas and peanuts (6). There were over 9,500 men and women involved, spanning 19 years of follow-up. I recommend that patients consume at least one to two servings a day, or 7 to 14 a week. Imagine the impact that would have, compared to the modest four servings per week used to reach statistical significance.

References:

(1) cdc.gov. (2) BMJ 2011; 343:d4488. (3) Arch Intern Med. 2004 Feb 23;164(4):370-376. (4) NHANES 2009-2010 Data Brief No. 12. Sep 2014. (5) eatright.org. (6) Arch Intern Med. 2001 Nov 26;161(21):2573-2578. (7) Circulation. 2005 Jan 18;111(2):157-164.

Dr. 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 or consult your personal physician.     

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