Michael Ruhlman does great writing on food and cooking, but he also writes about our food system and healthy eating. His recent blog post about how our eating and cooking habits have changed in the last 100 years. His discussion with doctor Roxanne Sukol highlights several major changes in our food supply that have resulted in our current epidemic of obesity, diabetes, and other chronic illness. "Obviously the tidal wave of diet books and diet advice and fad diets hasn’t worked, since the problems have only increased. Indeed, he suggests that diet books and trend diets may be a part of the cause."