I assume you're talking about what to eat, and not necessarily nutrition science. And I'd argue there are none, which is why the whole thing is a mess. I had a

I assume you're talking about what to eat, and not necessarily nutrition science. And I'd argue there are none, which is why the whole thing is a mess. I had a really smart coworker announce he was going on a week-long juice cleanse and I had to spit out my drink. Lots of nutritional advice in America is suspect because someone is marketing a product. And the Old Country ways of eating are either lost in the New World, or don't work sometimes because we've switched from manual labor to desk jobs. And on top of that, are you trying to optimise for athletic performance, longevity, or are you just enjoying life? (I don't think those three are necessarily mutually exclusive, but I do wonder about the modern obsession of over-optimisation.)