“Do I look fat?” The answer is a resounding yes if you’re on Facebook. But it’s not your friends telling you, it’s yourself. Facebook is fueling our thin-obsessed culture, says a new study from the Center for Eating Disorders at Sheppard Pratt in Maryland that surveyed 600 Facebook users, ages 16 to 40. More than half said that Facebook makes them more self-conscious about their bodies and weight. And men were some of those with the most negative feelings