Mark Bittman and Dr. David L. Katz patiently answer pretty much every question we could think of about healthy food. --- In fact, the basic theme of optimal eating — a diet made up mostly of whole, wholesome plant foods — has been clear to nutrition experts for generations. What does change all the time is the fads, fashions, marketing gimmicks, and hucksterism. How do you avoid the pitfalls of all that? Focus on foods, not nutrients. A diet may be higher or lower in total fat, or total carbohydrate, or total protein, and still be optimal. But a diet cannot be optimal if it is not made up mostly of some balanced combination of vegetables, fruits, whole grains, beans, legumes, nuts, seeds, and water. If you get the foods right, the nutrients sort themselves out. But if you focus on nutrients rather than foods, you quickly learn that there is more than one way to eat badly, and we Americans seem all too eager to try them all.

On how *all* grains contain bio-chemical defense systems that cause an inflammatory reaction in your gut and lead to a host of health problems, and how the paleolithic diet is a cure for it. The comments section is very long and bewildering in its inevitable conflict. (I should be following this diet already, but I cheat too often. At the very least, I should do what the post suggests and try to go 100% for a month.)