Medical Compass: Walk your way to better mental and physical health
Design strategies that get you up and moving
By David Dunaief, M.D.
Exercise helps build long-term physical and mental health, but regular exercise is often a challenge. Even with all the fitness-related apps to prompt us, modern society has an equal number of tech demotivators. It’s just too easy to let the next episode of our favorite series autoplay or to answer those last few emails.
Even if we want to exercise, we “don’t have time.”
I have good news. There is an easy way to get tremendous benefit in very little time. You don’t need expensive equipment, and you don’t have to join a gym. You can even sharpen your wits with your feet.
Esther Tuttle was profiled in a New York Times’ Science Times article a few years ago, when she was 99. Esther was sharp as a tack and was independently mobile, with no mobility aids. She remained active by walking in the morning for 30 minutes and then walking again in the afternoon.
Of course, this story is only anecdotal; however, evidence-based medicine supports her claim that walking is a simple way to get exercise that shows incredible benefits. One mile of walking a day will help keep the doctor away. For the step-counters among you, that’s about 2,000 steps a day for an adult with an average stride length.
Does walking improve mental acuity?
Walking has a dramatic effect, preserving brain function and even growing certain areas of the brain (1). Study participants who walked between six and nine miles a week, or just one mile a day, reduced the risk of cognitive impairment over 13 years and actually increased the amount of gray matter tissue in the brain over nine years.
Participants who had an increase in brain tissue volume also experienced a substantially reduced risk of developing cognitive impairment. Interestingly, the parts of the brain that grew included the hippocampus, involved with memory, and the frontal cortex, involved with short-term memory and executive decision making. There were 299 participants with a mean age of 78. All were dementia-free at the trial’s start.
In another study, moderate exercise reduced the risk of mild cognitive impairment with exercise begun in mid-to-late life (2).
If you’re pressed for time or building your stamina, you can split a mile into two half-mile increments. How long does it take you to walk a half-mile?
Does walking affect one’s mood?
Researchers performed a meta-analysis of studies related to the relationship between exercise and depression. They found that adults who walked briskly for about 75 minutes per week cut their risk of depression by 18 percent (3).
If you ratchet up your exercise to running, a study showed that mood also improves, reducing anger (4). The act of running increases your levels of serotonin, a hormone that, when low, can make people agitated or angry.
How do I build better habits?
A common challenge I hear is that working from home reduces much of the opportunity to walk. There’s no walking down the hall to a meeting or to get lunch or even from the car or train to the office. Instead, everything is only a few steps away. Our work environment is working against us.
If you need a little help getting motivated, here is a terrific strategy to get you started: set an alarm for specific points throughout your day and use that as a prompt to get up and walk, even if it’s for only 15 minutes. The miles will add up quickly.
A client of my wife’s schedules meetings for no more than 50 minutes, so she can walk a “lap” around her house’s interior between meetings or even do some jumping jacks. She also looks for opportunities to have an old-fashioned phone call, rather than a video call, so she can walk up and down the hallway while she’s meeting. Of course, this is one person, but it might prompt some ideas that will work for you.
Walking has other benefits as well. Weight-bearing exercise helps prevent osteoporosis and osteoporotic fractures. Sadly, if you don’t use them, bones weaken and break. Walking is a weight-bearing exercise that helps strengthen your joints, bones and muscles.
Remember to use your feet to keep your mind sharp and yourself even-tempered. Activities like walking will help you keep a positive attitude, preserve your bones and help increase the plasticity of your brain.
References:
(1) Neurology Oct 2010, 75 (16) 1415-1422. (2) Arch Neurol. 2010;67(1):80-86. (3) JAMA Psychiatry 2022. 79(6), 500-559. (4) J Sport Exerc Psychol. 2010 Apr;32(2):253-261.
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 or consult your personal physician.
