I've heard "beer belly," but what does "Wheat Belly" mean in the following book title?
Wheat Belly: Lose the Wheat, Lose the Weight, and Find Your Path Back to Health
I'd appreciate your help.
It is a new expression, probably made up by this author. But the meaning is easy to guess from "beer belly".
A beer belly is fatness, caused by drinking beer (beer is high in calories). A wheat belly is fatness caused by eating wheat, or wheat-based food like bread. Bread is also high in calories.
The author is suggesting that by reducing the amount of bread, cake and other food made with wheat, you will be able to lose weight.