As most of you probably know, vitamin D can be problematic, especially if you live far from the equator. Tanning beds seem to be the best option during the winter, but the problem arises when the tanning beds are set to very high UVA levels (makes you tan, but doesn't burn you OR cause you to produce vitamin D) and very low UVB levels (makes you tan and burns you quickly, but causes you to produce vitamin D), whereas the sun has a far different ratio (but I can't seem to find any sort of ratio anywhere, though it does depend on where you live and what time of the year it is).
Regardless, tanning beds have been reported to elevate levels of vitamin D, but I've heard it's not a very significant raise. But a raise is a raise, and thus it would seem that if tanning beds were configured to emit a ratio similar to sunlight, it would be a viable sunlight replacement for people far from the equator.
What are your thoughts?
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