I firmly believe you can't go wrong with your diet if you eat a wide variety of foods in moderation. There's an old saying, 'A little of what you fancy does you good.' There have been so many 'food fads' - special diets or 'superfoods' - recommended over the past few decades, but none of them seem to last.
The main thing is to avoid junk and pre-prepared foods. See my blog on cooking from scratch: https://steemit.com/cooking/@vivdoyle/eaxr7-doing-things-differently-not-right-or-wrong-just-different