“…and they're taken up by the steroid producing cells together. So you just don't produce steroid hormones for example without vitamin A and it's used in protein synthesis making hair and skin and so on will fail if you're deficient in vitamin A. Mucus membranes thicken and stop producing mucus with the vitamin A deficiency and someone sent me these books by a recent author claiming that there is vitamin A toxicity rampant and I looked through it and couldn't find any facts at all.”