Every day, or nearly so, women and men look in mirrors, step on scales, count calories, and worry about body fat and about their appearance. It happens enough that children as young as four begin to develop anxiety over food, or express fears of being seen in a bathing suit. Even eating healthfully can become an unhealthy obsession. And often enough, people become so desperate to get control over their eating as to spend huge amounts of money on drugs, diet plans, and surgery. Occasionally, the burden of eating, of bodily existence itself, is too much to bear, and people lose their lives to anorexia — the deadliest of all mental illnesses.