[caveat emptor]

Linus Pauling argued in the 1970s that vitamin C, also called ascorbic acid, could ward off cancer, but the notion has proved contentious.

No doubt. If Pauling's claims work and large numbers of people started taking his dosages, a few dollars per month for Vitamin C would upset more than a few applecarts.

[ari-freedom]

the claim by everyone is that exercising and losing weight works to cure diseases brought on by obesity and yet very few actually do this.

Most people would rather buy into a claim that you can just take a pill and not even have to eat an orange for vitamin C.