Too many Americans are taking too many drugs -- and it's costing us our health, happiness, and lives. Prescription drug use in America has increased tenfold in the past 50 years, and over-the-counter drug use has risen just as dramatically. In addition to the dozens of medications we take to treat serious illnesses, we take drugs to help us sleep, to keep us awake, to keep our noses from running, our backs from aching, and our minds from racing. Name...