Re: Vitamin C Megadosing and bowel tolerance
Well, any more vitamin C per day than about 4000-5000 mg would be wasting your money. I agree that 4000-5000 is beneficial, but this may cause bowel intolerance like you say and you will have to go to the bathroom a lot.
I am glad you brought up vitamin C. There are a lot more health benefits from vitamin C than just immunity. Think of all the health ailments our western society has. The RDA is simply just enough not to have scurvy, which right now is 60 mg. However, humans are the only animal not to manufacture their own vitamin C. Now, think of all the depression, heart conditions, muscle aches and pains, cardiovascular problems, etc. There are peer reviewed and refereed journal articles relating vitamin C supplementation to the relief of those ailments. And people are not getting enough vitamin C by a long shot. So, I'm all for vitamin C supplementation and I would encourage a good quality supplement, and powder forms are good too, where you just dissolve it in a glass of water and it makes a citrus drink for you.
Another thing about RDA values, they are just set so that you don't have a deficiency. Not having a deficiency does not equate to having enough. Look at iodine. The RDA is 150 ug. However, we know that the healthiest people in the world consume around 13 mg!