Skip to content

Food & Recipes

Vitamin D: Vital Role in Your Health

Vitamin D deficiency can be harmful -- in fact, there are real benefits to increasing your Vitamin D.
Font Size
A
A
A

Here Comes the Sun continued...

But before you grab the beach towel and head for the seashore, keep in mind that particularly in the higher northern latitudes, vitamin D levels can be problematic. If you live above 40 degrees north latitude -- north of Philadelphia, for example, or Denver -- you won't make much of any vitamin D in the winter.

A study at the University of Maine monitored vitamin D levels in 23 girls (ages 10-13, all residents of Bangor, Maine). In findings presented at the American Society for Bone and Mineral Research last September (2003), nearly half of these girls had insufficient levels of vitamin D in their blood in March, the time of year when levels tend to be lowest due to decreases in sunlight exposure during the winter.

"I was surprised by some of our findings," Sullivan tells WebMD. "These were healthy, active, light-skinned girls who spent a lot of time outdoors. They were eating well-balanced diets, and many were milk drinkers. So if anyone was going to have normal vitamin D status, you'd think it would be them. But their levels were quite low by March. We're in central Maine at about latitude 44 degrees north, and we don't make vitamin D in our skin for five months a year -- between November and March."

That kind of sun scarcity can take its toll on human health. "There is some striking evidence that as you go farther north, the incidence of certain kinds of cancer increases," says Sullivan. "There is more prostate and colon cancer in the north than in those who live closer to the equator."

The correlation is similar for multiple sclerosis. Research has shown the immune disorder is more common in areas with fewer hours of sunlight. For example, multiple sclerosis is more common in Canada and the northern states of the U.S. than in the southern states.

The Perils of Sun Worshiping

The sun isn't all good, of course. As any dermatologist will eagerly tell you, too much sun could risk a lot more than a bad sunburn. Routinely overdosing on sunshine could translate into life threatening skin cancer. On the other hand, if you're completely sun-phobic from sunrise to sunset, you may pay the price in the amount of vitamin D your body produces, cautions Holick, author of The UV Advantage.

Today on WebMD

Four spoons with mustards
What condiments are made of and how much to use.
salmon and spinach
How to get what you need.
 
grilled veggies
Easy ideas for dinner tonight.
Greek Salad
Health benefits, what you can eat and more.
 

WebMD Recipe Finder

Browse our collection of healthy, delicious recipes, from WebMD and Eating Well magazine.



bread
Recipes
soup
Recipes
 
roasted chicken
Recipes
grilled steak
Video
 

Loaded with tips to help you avoid food allergy triggers.

Loading ...

Sending your email...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

vegetarian sandwich
Recipes
fresh vegetables
Recipes
 
smoothie
fitArticle
Foods To Boost Mens Heath Slideshow
Slideshow