Where a teenage girl sees herself on her school’s social ladder may sway her future weight, a study of more than 4,000 girls finds. Those who believed they were unpopular gained more weight over a two-year period than girls who viewed themselves as more popular. Researchers said the study showed how a girl’s view of her social status has broader health consequences. The girls in the study were still growing—their average age was 15—and all of them gained some weight. However, those who rated themselves low in popularity were 69 percent more likely than other girls to increase their body mass index by two units, the equivalent of gaining about 11 excess pounds. (The body mass index, or BMI, is a calculation based on height and weight.)
Girls who put themselves on the higher rungs of popularity also gained some excess weight, but less—about 6½ pounds. The study “has broader implications beyond weight gain,” one expert notes. “Subjective social status is not just an uncomfortable experience you grow out of, but can have important health consequences.”