For an overweight child, the doctor warning them about their weight has to be just right, not too fat and not too thin.
A couple of studies out of North Carolina show some skinny pediatricians worry they'll seem unsympathetic. Overweight doctors see themselves as being hypocritical when they give advice to chubby children.
One Denver pediatrician who doubles as co-chair an American Academy of Pediatricians' obesity task force says a number of children's doctors say they would rather treat strep throat than obesity.
Only 12 percent of the doctors surveyed by researchers at the University of North Carolina at Chapel Hill say they feel very effective in treating overweight children.
The North Carolina results may be an indication of the challenges faced by pediatricians across the country. About 15 percent of U.S. schoolchildren are estimated to be obese, and 30 percent overweight.