Earlier quoted context omitted.
> false discoveries of the field of nutrition I would love to hear about some of these.
My guess is that he meant things like "fat makes you fat and causes heart disease", or "fruit juice is good for you", or "margarine is better for you than butter" or "meat causes cancer" etc.
Yes, these are all examples or tentative examples of the sort of thing I'm talking about. (I don't know much about what they're eating up on the ISS, though, so I don't know if they're applicable.)