@Mauritio said in Vitamin A quotes from Ray's favorite physiology book:

@Peatly said in Vitamin A quotes from Ray's favorite physiology book:

@Mauritio There are huge variations in results for vitamin A studies. I think Dr Peat’s recommendation, which is to be cautious if hypothyroid, seems reasonable. I would like to see that Iranian study replicated elsewhere – especially in regions where Billy Goat is blocking the sun.

Yes, I agree.
What does it have to do with the sun/ Vitamin D?

I was under the impression that being exposed to sunlight, for extended periods, increases your vitamin A requirements. I was thinking that if the sun is being blocked this might lower need?

Dr Peat talking about light exposure and vitamin A

This is the dentist Dr Peat mentions in that clip
Emanuel Cheraskin, M.D., D.M.D., late Professor of Oral Medicine at the University of Birmingham, AL.

The "ideal" daily vitamin A intake

Relationship of vitamin A and oral leukoplakia