This must be a joke.
Ordinary people are led by science like they used to by religion. The nutritional turmoil in their lives is no coincidence - they buy into everything from anyone.
Rightfully so, as we should be led by science.
Anyway, you have a greater chance of rebuking such nutritional turmoil if you have a basic understanding of nutrition. It doesn't mean you won't fall prey to the bullshit, but at least you have a better shot of it. No system is perfect. People will stray, but if we don't educate from an early age, then we are pretty much 100% doomed. Then there is no chance.