Well then how should it work? Either people are able to make their own choices, and final responsibility for ones diet rests with the individual - or it rests with someone else.

If a party was able to stop all research into a topic, that would be one thing. But I do not think that is the case here.

Besides, when it comes to things like sugar - it is clear that it is not particularly bad for you. Unless you overeat to the point of obesity... in which case anything is bad for you.

Trying to tie in age-related disease... I think is a mistake. Once people age to a certain point, the body has a harder time doing many things properly.

For who could be free when every other man's humour might domineer over him? - John Locke (2nd Treatise, sect 57)