Can you get too much vitamin D from the sun?

Tod Cooperman, MD, the founder and president of, one of the most trusted sites on the internet for information about natural medicines (herbs, vitamins, and supplements) has this to say about that:

One of Our Members Asked: I spend a lot of time in the sun, especially in the summer. Does this mean my vitamin D levels could get too high?

Dr. Cooperman’s answer:

No. Even though spending short periods of time in the sun can usually provide adequate amounts of vitamin D, spending longer periods of time in the sun will not increase vitamin D levels to toxic levels.

This is because excessive exposure to sunlight degrades previtamin D3 (which is normally converted by sunlight into vitamin D3 in the skin) and degrades vitamin D3 itself.

However, as discussed in the CL [ConsumerLab] Answer about getting too much vitamin D, it is possible to get too much vitamin D from supplements.

For more details about sun exposure and vitamin D, see the Vitamin D Supplements Review.

I recommend to anyone interested in evidence-based information about natural medicines that they consider subscribing to I consider it an invaluable source for my practice, writing, and media work.

© Copyright WLL, INC. 2021. This blog provides a wide variety of general health information only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment from your regular physician. If you are concerned about your health, take what you learn from this blog and meet with your personal doctor to discuss your concerns.

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