For thousands of years, human beings have been deriving their nutrients from food - vegetables, grains, meat, etc. So why have we turned to pills for nutrition and dietary needs over the past several decades? In 2012, the supplement industry yielded 32 billion dollars in revenue. This begs the question: Is food not enough? On episode 97 of What Doesn't Kill You, Katy Keiffer talks with Dr. Marion Nestle, Paulette Godard Professor at NYU's department of nutrition, about the relatively new craze that's sweeping the world of health nuts: supplements. Dr. Nestle explains that the interest in dietary supplements doesn't come from any sort of empirical evidence, but the overall population's lack of faith in our current food system.