The Sun UVB UV Index and Vitamin D Synthesis questions
Does anyone know anything about the topics in the title? I read that clouds can block UVB quite a bit which makes getting Vitamin D less or nil depending on how much UVB is blocked. I go to the weather channel thinking with the decent sized cloud cover where I can't see the sun at all that the UV index is going to be lower with the clouds in mind...
It was 6...that's way above the 3 or maybe 2...can't remember if it was 3 or 2 they say it needs to be to get Vitamin D from the sun. Am I working under an over-exaggerated view of how well clouds work to block UVB. Might the normal UV Index be 10 and now its 6 which is actually quite a bit lower than normal but still high enough UVB for Vitamin D synthesis?
I just didn't feel like going out for the sun if the sun isn't going to give me anything.
Primal start date: July 1st 2011
Start Weight: 275
Current Weight: 248
Stats below as of September 1st 2011 Tested via BodPod
Body Fat 25.4%
Fat Mass 63.721
Fat Free Mass 74.6%
Fat Free Mass 187.087
Goal weight: 180-200 lbs(Recommended weight is around 180 for my height but that sounds low)
Total lost so far: 27 lbs