More Vitamin D Needed in Winter...

New research in the Journal of Nutrition suggests quadrupling Vitamin D levels in the winter. For the study, scientists recruited 112 women, average age of 22.2, giving some a placebo between March 2005 and September 2005 and then given a placebo or a vitamin D supplement until February 2006. At the end of the experiment, women on the vitamin D supplement had higher serum levels 25-hydroxyvitamin D, 35.3 nanomoles per liter compared to only 10.9 nanomoles per liter. The body manufactures Vitamin D from ultra-violet light derived from the sun; NutraIngredients reports.

Dr. Fuhrman is a huge proponent of vitamin D, especially for bone health, more so than calcium. Vitamin D also helps reduce risk of hip fractures, multiple sclerosis and boosts physical strength in young girls. And it was not too long ago the American Academy of Pediatrics suggested doubling kids’ intake of vitamin D, citing evidence vitamin D helps prevent serious illness, like cancer and diabetes.

Vitamin D deficiency has drawn increased attention over the past few months. Previous studies have associated insufficient Vitamin D with stunted growth, hypertension and rickets. In the winter, when the days are shorter and sunlight is in short supply, therapeutic lights can keep the sunshine coming.

Image credit: Grant MacDonald

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diane lassen - March 12, 2009 7:53 AM

I couldn't agree more. After reading the research presented by Dr. Michael Holick, it appears to me that everyone is probably deficient to one extent or another. Personally, I spend a lot of time out in the sun, gardening, hiking and reading, and in August 2008 my D level was a measly 28!!! I supplemented with 8000 IU of D3 from August till February and I am happy to say that my level is now 52. it takes a lot to effect change, and some people do not absorb it from supplements as readily as others. For them, a high quality, high UVB tanning light is a good alternative. If you can find grass-raised meats (if you eat meats) you can get some vitamin D there, but good luck finding it and affording it!
As a nurse and health counselor, I am always standing tall on the vitamin D bandwagon. I tell my patients to wear a safe chemical free sunscreen on their faces and to leave their arms and legs bare to absorb the rays to make their D. And supplement, supplement, supplement in the fall, winter and early spring!!!!
Just my 10 cents worth (accounting for inflation...)

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