“Why are there fat doctors?”

This quote underscores a central point in Fung’s book, namely, that conventional diets don’t work. Physicians have the intellect and willpower to understand and follow various diets, yet many are obese, suggesting the problem lies with the diets, not with dieters.

“There is no survival advantage to carrying a very high body-fat percentage.”

Fung debunks several weight loss myths. In this quote, he addresses the popular misconception that the body evolved to put on weight to survive. The contrary is true–humans evolved toward leanness.

“It. Just. Does. Not. Work.”

This punctuated quote addresses caloric reduction, the most common weight loss method. The research shows that eating less only results in short-term, not lasting, weight loss.