[nradov]

Most nutrition science is bunk. We know you shouldn't consume too many calories. We know you need a certain minimum amount of micronutrients and essential amino acids. Nothing else really meets modern evidence based medicine criteria. If there are actual benefits from eating or avoiding certain foods then the effect sizes appear to be much smaller than other lifestyle factors like sleep, exercise, stress, and substance abuse.

As a practical matter a more productive approach is to (mostly) ignore the science and conduct informal n=1 experiments. Try adding or removing certain foods for a few months and see how that impacts your athletic performance and subjective well being.