How much vitamin D do I need to stay young?

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Dr. Michael Roizen, MD
Internal Medicine
For maximum antiaging protection, I recommend at least 400 international units (IU) of vitamin D a day in a supplement if you are seventy or younger, and 600 IU a day if you are older than seventy, unless you are absolutely sure you are getting enough from your diet. This is what I consider the RealAge Optimum (RAO) -- the dose you need to stay young. That means four glasses of nonfat milk a day (for 400 IU).

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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.