What IS the Best Diet for Health, Weight Loss, and Longevity?

I’m a bit of a nutrition nerd, even if I don’t always follow what I learn. If you come to my house, you’ll see bookshelves lined with books about nutrition, often conflicting each other. I’ve tried almost every “diet” out there, from low carb, to paleo, to high carb, high fiber, to vegan…and everything in