Eating organic used to be a fringe commitment. Not anymore. The idea that the adage "you are what you eat" actually has merit that America's industrialized food system is making consumers—literally, consumers—obese, diabetic and primed for heart disease—has converted millions of us into pursuers of the American Organic Dream: Eat Organic To Live Longer and Better. But many aren't buying it. Most consumers, for example. Although sales of organic food increased sixfold over the last decade, organics are still a…