.Each of us must determine what is right for us. My belief is the body will let you know
Wrong, dead wrong! A blood test will tell you if you are in the right zone.
.From what I have read toxic levels may occur at 50,000IU a day for extended periods
I do realise that your medical knowledge is informed by your particular philosophy, but you really should read more widely. As little as 10,000iu can be bad for you - that's can not will - and you can read more here:
http://www.mssociety.org.uk/forum/new-d ... rd-warning
The doctors ... ... will tell you to use tanning creams which cause cancer. That shows what they know.
Actually, it does tend to be indicative of whet you know. having travelled extensively from the Bay Area to Merced and down to San Diego, across to Southern Nevada, Western Arizona and Southern Utah, I do not recall a single person in the street wearing sunblock. Of course, it is possible that the MDs in that area of the US have not had the benefit of the word according to wanna, but I rather think not.