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Rochester, PA
A 32-year-old female asked:

What is the optimal vitamin a to vitamin d ratio in supplements? there has been a lot of controversy around that and cod liver oil.

1 doctor answer1 doctor weighed in
Dr. Michael Kleerekoper
A Verified Doctoranswered
Endocrinology 52 years experience
A and D: If the weather is fine and the sun shining in Peru you don't need either A or D. Just enjoy life. When the fall and winter returns you can go back to the other two.

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Last updated Jun 15, 2015
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