Maybe it's because women in L.A. are overly concerned with what they're eating, but when I opened my own dermatology practice, I started asking every patient to tell me about her diet. Over and over I heard variations on the same theme: "I know that my diet doesn't have an effect on my skin, but I seem to break out every time I eat [fill in the blank]." It didn't take long to notice some definite patterns and to realize I was on to something. Maybe...