
You've heard it time and again: fad diets don't work for permanent weight loss. But what about those times when you really need to lose some weight fast? It's hard to pass up the promise of crash diets like the Lemonade Diet, Cabbage Soup Diet, orLose 21 Pounds in 21 Days when your mission is to squeeze into a new outfit in time for a reunion or wedding, or you finally decide you just want to lose weight.So what's wrong with dropping 20 pounds fast so you can wow your friends and family with a svelte new shape?The truth is that nothing is wrong with losing weight rapidly -- as long you do it the right way, says Michael Dansinger,...