Sun block that promotes Vitamin D production

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In summary, the conversation discusses the possibility of designing a sunblock that allows for Vitamin D synthesis while still providing protection from harmful UV rays. It is suggested that using salicylic acid as the active ingredient may be effective in achieving this balance. However, it is also noted that Vitamin D is most effectively synthesized at a wavelength just outside of the UVA and UVB spectra, making it difficult to completely separate Vitamin D production from sunburn. The conversation also references a study that found the ultraviolet action spectra for DNA damage, skin cancer, and Vitamin D synthesis to be identical.
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Loren Booda
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Could one design an effective sun block which passes the spectrum necessary for Vitamin D synthesis?
 
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Vitamin D is most succesfully synthesized in the skin at wavelengths of 270-290nm, which is just outside of the UVA and UVB spectra. A sunblock that uses salicylic acid as the effective ingredient shouldn't block Vit D production.
 
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Vitamin D production peaks at 297 nm, right in the middle of the UVB band (280 - 315 nm), suggesting that separation of Vitamin D metabolism from burning will be difficult or impossible.

EDIT: "..the ultraviolet action spectra for DNA damage, skin cancer, and vitamin D3 photosynthesis are identical ..."
B. Gilchrest, American Journal of Clinical Nutrition, Vol. 88, No. 2, 570S-577S, August 2008
 
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FAQ: Sun block that promotes Vitamin D production

How does sun block promote Vitamin D production?

Sun block with specific ingredients, such as octyl salicylate and octyl methoxycinnamate, allow for a small amount of UV radiation to penetrate the skin and stimulate Vitamin D production.

What is the recommended amount of sun block to use for Vitamin D production?

The recommended amount of sun block to use for Vitamin D production is a thin layer applied to exposed skin areas. It is important to still practice safe sun habits and not rely solely on sun block for Vitamin D production.

Can using sun block prevent all Vitamin D production?

While sun block can reduce the amount of Vitamin D produced, it does not completely prevent it. A small amount of UV radiation can still penetrate the skin and stimulate Vitamin D production.

Are there any risks associated with using sun block for Vitamin D production?

There are no known risks associated with using sun block for Vitamin D production. However, it is important to follow the recommended usage and not rely solely on sun block for Vitamin D intake.

Can sun block with SPF 30 or higher still promote Vitamin D production?

Yes, sun block with SPF 30 or higher can still promote Vitamin D production. The key is to use a thin layer of sun block and not rely solely on it for Vitamin D intake.

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