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| I know that we need vitamin D for absorption of calcium. Do you make Vitamin D if the sunlight is coming through glass (when you're riding in a car or sitting by a window)? | to Top |
The body makes vitamin D when skin is exposed to sunshine Ultraviolet B rays are primarily responsible for this process and window glass protects against most UVB exposure. Consequently, it is hard to get a tan or make vitamin D indoors. Vitamin D is crucial for building strong bones. This nutrient also appears to help prevent heart disease, diabetes and certain cancers. A new study from Harvard has found that lung-cancer patients who got more sun and had high levels of vitamin D had much better survival rates. Fifteen minutes of sun exposure two or three times a week may be all it takes to make adequate amounts of vitamin D. For those who cannot tolerate even that much sun, a supplement might do the trick.
Graedon, Joe and Teresa Graedon. 2005May8. People's Pharmacy. Glass bars sun's rays that make vitamin D. The Sunday Oregonian L12.
Updated: Saturday, December 29, 2007.
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