The nephrologist gave me diet advice: “Don’t eat anything white.” (1) From peaceandnutrition.com I bristled. The advice felt less like medical guidance and more like a bumper sticker. He gave me this catchy little motto without any explanation of what it was supposed to accomplish or why it applied to me specifically. I've heard this adage before. It’s meant as a quick-and-easy guide to help people reduce sugar and refined carbohydrates. Fine. I get that. But the thing is —