Well, according to evolutionary science, the home sapien species has been around somewhere between 550,000 to 750,000 years. So a lot of us must have figured out a few things along the way. I am a pretty good self taught dietician and my kitchen is something of a science lab because of all the different kinds of dietary needs among the people who come to visit or just come to dinner here. But there is a lot of things I don't know and a lot of things I know change from year to year mostly due to a 'scientific' study some college kid did for a Masters or PhD thesis or whatever
I am at the total mercy of others to tell me what is safe to eat and what isn't in a lot of the food we have available to us. And I am pretty confident the FDA has allowed a lot of food products and medications on the market that probably should have had a closer look.
And that's why I think somebody like RFK Jr who has been preaching the problems with our food and drug supply for a long time now, and who has the time and interest, to look into it and make it better if he can, is most likely a good thing.