[AnonC]

> 2. 15 minutes of full body exposure in noon sun is equivalent to a dose of ~20,000 IU D3

For someone who claims to have done a masters on Vitamin D, I find this generalized statement disturbing. What skin tone the person has, what season it is, what latitude the person lives at, age of the person etc., are factors in how much Vitamin D is produced by the body on exposure to sunlight. I’m afraid I can’t take the other points seriously because of the brevity and lack of nuance.

[trevorkoob]

Yes, this was overly brief and a tilde is not enough to qualify this statement, and I should have said noon equatorial sun.

My point here was meant to be about how this is essentially the daily maximum dose from UV radiation due to the isomerization of previtamin D into inactive isomers, and to give context to a dose of 10,000 IU D3 seeming large when it is half the amount a person might receive from sun exposure.