Whenever talking about nutrition, I always recommend the book The Big Fat Surprise, by Nina Teicholtz. It's an amazing read, I couldn't put it down. Here's my post on it -#320715.

The subtitle is - Why Butter, Meat and Cheese Belong in a Healthy Diet. I had never been seriously exposed to the ideas she talks about in the book, and it was a revelation. It's why I went carnivore. (Though after I went carnivore, I discovered a huge and growing carnivore oriented subculture, huge amounts of youtube channels, blogs, books, etc. )