If you're interested in some new ideas that are backed with a lot of facts then you might read these books. I've just finished two of them and am part way through in the third. Every diet idea mentioned in this thread is in there along with where they come from and what, if any, science backs them up.
It is worth mentioning that since Americans enthusiastically adopted the current diet recommended by the American Heart Association in 1980 that rates of obesity, diabetes, and other diseases have skyrocketed. There is something wrong with that picture.
Teicholz, Nina. The Big Fat Surprise: Why Butter, Meat & Cheese Belong in a Healthy Diet. New York: Simon & Schuster, 2014
Taubes, Gary. Good Calories, Bad Calories. New York: Albert A. Knopf, 2007
Taubes, Gary. The Case Against Sugar. New York: Albert A. Knopf, 2016
Conform and be dull. —James Frank Dobie, The Voice of the Coyote