Diet yo-yoing How many times do we hear that we lose weight by eating less?  Isn’t it about smaller portions?  Isn’t my weight a problem because I eat too much? It may seem simple:  Eat less, weigh less.  Well, not so fast.  The equation doesn’t quite work so well.  In fact, how much do we know (first hand?) about diet yo-yoing? When we eat less, our body signals the absence of input and increases the storage of more fat.  In other words, eating less triggers a starvation response, which causes the body to go into “store up” mode and slow down in order to protect...