Too fat, too thin and just right. If your New Year's resolution is to lose weight, listen in--you may be overweight because of microflora run amok. Jeffrey Gordon has published studies on how microflora in our guts regulate weight and sometimes go haywire. We hear from a gastric bypass patient who lost a hundred pounds in a matter of months; then a doctor who performs these surgeries tells his reservations. How to feed a teenage boy? With lots of food. Georgia Orcutt tells of her "food blind" teenage sons. Evan talks to Harriet Brown about struggling to refeed her anorexic daughter, and Patric Kuh of Los Angeles magazine gives us the best new restaurant in LA.