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People With Sensitive Skin May Get Less Vitamin D From the Sun

WebMD Health News

Pale People at Risk for Vitamin D Deficiency

Oct. 5, 2011 -- Pale people and the sun just don’t mix.

People with pale skin tend to be more prone to sunburns -- and skin cancer. So, they often take steps to avoid the sun and slather on sunscreen when they are exposed to the sun’s rays.

As a result, they may make less vitamin D and may benefit from vitamin Dsupplements, according to a new study inCancer Causes and Control.

Our bodies make vitamin D, also known as the sunshine vitamin, when we are exposed to sunlight. Vitamin D had become a rock star among vitamins in recent years as deficiency has been linked to brittle bones, heart disease, diabetes, cancer, and certain autoimmune diseases.

Sunlight -- 10 to 15 minutes a day -- is a good source of vitamin D, but it can also be found in foods such as fortified milk, butter, eggs, fatty fish, and supplements. Other factors such as our genes can influence the level of vitamin D in our bodies.

In the study, researchers defined optimal blood levels of vitamin D as 60 nanomoles per liter (nmol/L). Of 1,200 people. some with the skin cancermelanoma and some without melanoma, 730 had low levels of vitamin D. Some were the melanoma patients. Based on previous research, people with melanoma may have low levels of vitamin D and need supplements, the researchers suggest.

Also, participants with a specific genetic variant involving vitamin D were more likely to have low vitamin D levels, the researchers found.

But it was the pale-skinned people in the study who were among the most likely to show low vitamin D levels. “Fair-skinned individuals who burn in the sun tended to have lower levels of vitamin D,” researcher Julia Newton-Bishop, MD, says in an email. She is a professor of dermatology at the University of Leeds, U.K. "Our data suggested that this was because they spent less time in the sun but probably was also related to covering up more."

Too Much Vitamin D Not Such a Good Thing Either

So just how much vitamin D supplementation should pale-skinned people take?

Brush up on Beauty

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