.edu and .gov sites are typically considered the gold standard for nutrition information. But your question is incredibly broad. What, exactly, are you looking

.edu and .gov sites are typically considered the gold standard for nutrition information. But your question is incredibly broad. What, exactly, are you looking for? Eating guidelines? Nutrient content? There are lots of different dietary protocols (keto, vegan, etc etc) that various people swear by. So, your question is simply too broad to answer with more than very broad guidelines about what kind of website to look for when searching.