eileen

I have more then 3 binders full of articles plus about 200 links online. I don't mean to offend you but you really do need help with your research. Your time might be better spent getting a degree in dermatology. Yes UVB is decreased in HP units. Is it decreased enough to stop the production of pre-vitamin D3 process??? NO. I highly recommend you purchase a Vitamin D meter from Solar Meter and get serious if you want to get in to conversations about tanning and vitamin D here. Also look up Don Smith he's by far the BEST on the stats etc. If you are serious about wanting to understand this read every single one of his posts and never miss one. If you need help he's always been great about helping us understand the complicated terms he uses. :)

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under-exposure to uv rays is as dangerous as over-exposure...This is "D" life! (eileen)