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

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 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 >>

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Also see these related CL Answers:



As vitamin D is a fat-soluble vitamin, why is it necessary to take it every day? >>

Do any supplements help prevent sunburn or skin damage from sun exposure? >>

A blood test showed my vitamin D level is low. How do I know how much vitamin D to take?  >>

I read that aging lowers the body's capacity to produce vitamin D. Even regular sun exposure will not suffice and one may have to take a vitamin D3 supplement during old age to meet our body's regular requirements. Please comment on this. >>



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Comments
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micheline6881   July 22, 2015
you should probably lower your vit D supplement during Summer as it will get higher from the sun.

This CL Answer initially posted on 7/21/2015. Last updated 8/3/2017.

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