A diet high in non root vegetables and high quality protein is probably the best diet you can eat. Paleolithic is the way to go.
Do you really think so with the extreme genetic modification going on? Aren’t you concerned about those extra bits of DNA mucking up your own? At least if you are eating animal meat, the animal can only be somewhat genetically modified without killing it. No such thing as non GM food, while they may not have used GM seed, pollination takes care of that.