Sure. I told you that years ago. Oh, of course, you don't remember!
The government doesn't directly employ some sort of "super-scientists" who know better than all the people who work in the field. What it generally does, is it goes out and hires people who work in the field to create a panel, the panel draws up guidance, and the government then acts on that guidance.
If the people who make up the panel believe the science says X, then X is what gets reported to the government. The fact that in 20-30 years people will look back and realise it was Y, not X, and in fact there was evidence it was Y all along which had been overlooked doesn't fucking matter when considering the competence of the government.
So bizarrely antagonistic you are (to me, government, or whatever) is that you then attack government intervention. So, you want the government to do nothing at all. It sits there and lets corporations ram vast amounts of crud down people throats, saying "none of our business, it's up to private citizens to look after their own diet". No public health advice of any sort, on any topic - you're on your own, Americans! Why restrict tobacco advertising and have RDAs for vitamins or regulate drugs, it's just the fucking government screwing with people's freedoms.