has anyone here ever noticed any improvements or side effects of taking vitamin A as retinol? as we know, there is conflicting information out there that says you can make all the vitamin A your body needs from enough carotenes, and others that say carotenes alone can not guarantee vitamin A sufficiency (supported by some studies). did anyone here ever "heal" any symptom or chronic health problem by taking retinol, and if yes, how much did you take? (i'm not talkig about cod liver oil, just pure vitamin A/retinol as a separate supplement). thanks!
Christopher Masterjohn just published an interesting blog post on how vitamins A and D give much more benefit when taken together.
I think with any supplement, results depends on your starting point. If you have a deficiency or at least sub-optimal levels of a nutrient, you may see a big improvement when you supplement, while the next guy, whose levels were ok in the first place - won't.
I know people directly who have improved vision and cured night vision problems directly.
That being said, a whole food animal based diet shouldn't be deficient or need supplementation.
If youre a veg*n or herbivorous paleo, I both feel for you and condone the supplementation with a strong recommendation to eat more tasty tasty meat.
CLO vs Vitamin D 7 Answers