Wednesday’s Ask Dr. Walt — Sun Exposure and Vitamin D Toxicity

Dear Dr. Walt,

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

—Tanned in North Carolina

Dear Sun Seeker,

Nope. According to the American Academy of Dermatology, although 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.

But, it is very possible to get too much vitamin D from supplemental vitamins.

2 thoughts on “Wednesday’s Ask Dr. Walt — Sun Exposure and Vitamin D Toxicity

Comments are closed.

Enter your email to subscribe to Dr. Walt's blogs.

You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

Dr. Walt Larimore will use the information you provide on this form to be in touch with you and to provide updates and marketing.