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This Is The Most Important Thing You Can Do To Prevent Alzheimer's (No Matter Your Age)

Emma Loewe
Emma Loewe
mbg Sustainability + Health Director
By Emma Loewe
mbg Sustainability + Health Director
Emma Loewe is the Senior Sustainability Editor at mindbodygreen and the author of "Return to Nature: The New Science of How Natural Landscapes Restore Us."
Photo by Killian Pham
By the year 2050, the United States will have 14 million people in need of full-time care for Alzheimer’s disease, a number equal to the populations of New York City, Los Angeles, and Chicago combined. Anxiety disorders are the most common mental illness in the United States, affecting 40 million adults, and issues like brain fog are finally being taken seriously. Taking care of our brain health is more urgent than ever, so we’re spending the next 10 days at mindbodygreen talking about our brains and what we can all do to protect our mental health. Follow along here at #mbgbrainhealth and on Instagram and Twitter. And be sure to sign up for our FREE brain health webinar with 11-time NYT best-selling author and pioneering functional medicine doctor Dr. Mark Hyman

Alzheimer's is the fastest-growing epidemic in the world, and 5.7 million Americans are living with the neurodegenerative disease today.

While we haven't quite figured out what causes Alzheimer's, genetic and lifestyle factors likely play a role. And that's great news because it means there are steps we can take to protect ourselves earlier in life. Dr. Dean and Ayesha Sherzai are two of the foremost experts on how to optimize your routine to promote a healthy brain into the future. The husband-and-wife duo are the directors of the Alzheimer's Prevention Program at Loma Linda University Medical Center and authors of The Alzheimer's Solutionand they're officially calling this the "century of the brain."

We were lucky enough to pick their (probably very healthy) brains at this year's revitalize event and for an upcoming episode of the mindbodygreen podcast. And we bet you can't guess the No. 1 piece of advice they have for protecting yourself from Alzheimer's starting today.

This is the most important thing you can do to protect your brain from Alzheimer's.

You've probably been told to "find your purpose" at some point in life (and you've likely shrugged it off on more than one occasion), but the advice actually holds some real weight. According to Dean and Ayesha, nothing determines brain health quite as much as a sense of purpose.

That's because purpose—setting personal goals and taking small but steady steps to achieve them over time—strengthens neuron connections and challenges the brain to be proactive. Purpose also increases our levels of "good stress" as the Sherzais call it, and decreases bad stress—the kind of chronic and overwhelming worry that pumps the body full of cortisol and adrenaline. Purpose-driven stress, on the other hand, actually improves health and reduces inflammation. (You can learn more about the distinctions between good and bad stress here.)

While some might say that solving puzzles and reading tons of books are the best ways to give your brain a workout, Ayesha and Dean are convinced that it's these more action-oriented exercises that we really benefit from.

What are some other ways we can protect our brains?

1. Get more sleep.

"The brain is the most active organ in our body—it consumes more than 25 percent of the body's energy in any given moment," Ayesha told a captivated crowd at revitalize. "When we sleep, the brain is getting rid of all the toxic by-products."

One recent study found that the sleep-brain connection is so strong that people who suffer from sleep apnea have a 70 percent higher risk of contracting Alzheimer's. And unfortunately, one night of poor sleep can significantly increase disease-promoting inflammation in the body. If you're having trouble consistently getting the sleep you know you should, here are some lifestyle tweaks that could help.

2. Exercise (especially the legs!)

Did you know that strong legs mean a stronger brain? That's right: Muscle mass in the legs has been associated1 with a larger hippocampus, the part of the brain that processes memories. The Sherzais recommend partaking in strenuous activity 20 to 30 minutes a day for four to five days a week, focusing on those legs whenever you can.

3. Eat a balanced diet.

The Sherzais say that greens, berries, nuts and seeds, and whole grains with lots of fiber are key.

Which foods might be causing your brain fog? Find out here.

Ready to learn more about how you can keep your brain healthy, no matter your age? Register now for our FREE Functional Nutrition Webinar with Dr. Mark Hyman, where you’ll learn how to make diet and lifestyle modifications right now for better brain health!
Emma Loewe author page.
Emma Loewe
mbg Sustainability + Health Director

Emma Loewe is the Sustainability and Health Director at mindbodygreen and the author of Return to Nature: The New Science of How Natural Landscapes Restore Us. She is also the co-author of The Spirit Almanac: A Modern Guide To Ancient Self Care, which she wrote alongside Lindsay Kellner.

Emma received her B.A. in Environmental Science & Policy with a specialty in environmental communications from Duke University. In addition to penning over 1,000 mbg articles on topics from the water crisis in California to the rise of urban beekeeping, her work has appeared on Grist, Bloomberg News, Bustle, and Forbes. She's spoken about the intersection of self-care and sustainability on podcasts and live events alongside environmental thought leaders like Marci Zaroff, Gay Browne, and Summer Rayne Oakes.