Does vitamin C help strengthen the immune system?

Dr. Rovenia Brock, PhD
Nutrition & Dietetics
Vitamin C supports the body’s immune system by protecting the integrity of cells, and affecting the production and function of white blood cells. Vitamin C is a powerful antioxidant that helps fight against free radicals in the body. Free radicals are molecules that can harm your healthy cells and negatively impact the way those cells function in the body.
Dr. Michael Roizen, MD
Internal Medicine
Taking 500 milligrams of vitamin C twice a day can boost your immune system (and have a RealAge effect) of making you up to one year younger. You can take it in supplement form, and also get it through foods such as oranges and other citrus fruits, 100 percent natural orange juice, tomatoes, and bell peppers.
YOU: The Owner's Manual, Updated and Expanded Edition: An Insider's Guide to the Body that Will Make You Healthier and Younger

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YOU: The Owner's Manual, Updated and Expanded Edition: An Insider's Guide to the Body that Will Make You Healthier and Younger

Between your full-length mirror and high-school biology class, you probably think you know a lot about the human body. While it's true that we live in an age when we're as obsessed with our bodies as...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.