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By Michael Roizen, M.D. on Apr 12, 2023

Jonas Salk, who developed the polio vaccine, once said, "The mind, in addition to medicine, has powers to turn the immune system around." He was right. The keys to a healthy immune system include your mind, your body, and a good dose of smart choices about what you feed them both.

First, you want to mind your stress response. Chronic levels of stress hormones such as cortisol alter your gut biome, where 70% to 80% of immune cells reside, making you more vulnerable to infection and mental distress. Physical activity, playing, meditation, interaction with supportive friends and family, and having a passion all facilitate stress management and a healthier immune system.

The health of your gut biome and its effect on your immune system also depends on your nutritional habits. Being deficient in nutrients such as zinc, selenium, iron, copper, folic acid and vitamins A, B6, C, D, and E makes you more likely to get hit with bacterial, viral and fungal infections. The smart approach: Get these nutrients through fresh, unprocessed foods. If you're pregnant, breastfeeding, have a chronic illness, or don't eat healthy foods, you may benefit from half a multivitamin/mineral twice daily, as well as omega-3s (900 milligrams) and vitamin D (1,000 milligrams).

Other immune boosters include not smoking anything, seven to nine hours of high-quality sleep nightly, and washing your hands when coming in from outdoors, handling food, after using the bathroom and before eating. Also, maintaining a healthy weight lowers body-wide inflammation and that helps keep your immune system healthy.

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Health pioneer Michael Roizen, M.D., is chief wellness officer emeritus at the Cleveland Clinic and author of four No. 1 New York Times bestsellers. His next book is "The Great Age Reboot: Cracking the Longevity Code for a Younger Tomorrow." Do you have a topic Dr. Mike should cover in a future column? If so, please email questions@GreatAgeReboot.com.

(c)2023 Michael Roizen, M.D.

Distributed by King Features Syndicate, Inc.


(c) 2023 Michael Roizen, M.D. Distributed by King Features Syndicate, Inc.