It seems like everybody wants to lose weight. So, what is the best diet for weight loss? It is really a diet that, seemingly a paradox, has the most fat. If you want to lose weight, you eat more fat, and this isn’t that new. This dates back to at least 2007 as published in the Journal of the American Medical Association where they compared the Atkins diet, Traditional American diet, Ornish diet, and the Zone diet.