The Diabetes Code for sure. If that doesn’t wake somebody up, nothing will.
EDIT: If they’re not into reading, have them watch a free documentary on youtube called Fat Fiction. It’s a ground breaking, eye-opening video. Everybody should watch this!
Fast Feast Repeat by Gin Stephens is not as scientifically dense as The Obesity Code, and may be easier to read because of that. I feel like it offers way more tips on how to incorporate fasting into my life.