her trainer says she not and she just has a quick metabolism. i wish i did. many are looking at her as a standard of beauty. and now eating des orders among teens are much more prevalent than anyone thought. here with me is dr.
catherine birndorf. welcome, dr. catherine i'll call you. it says a half a million teens have an eating disorder. isn't that more than we thought? >> i think it's an unusual number. we may not have been asking the right questions. >> there are 300 million people in america so half a million is not that many people but they're all to and jers. >> right. i think we have to take this very seriously because this is a young population. they looked at ages 13 to 18 and found much more so than previously thought that people are suffering from anorexia, bulimia, binge eating disorders. when they start early and go on for a long time, they're really hard to treat. >> binge eating is the most prevalent. how is it different from bulimia? you eat and don't throw up? >> the got it. >> i put myself in that category. i forget the second step. i know this is serious topic. i'll try to control myself. the reason it's serious is because the median age for the on set for this disorder is 12 years old, which means 8 or -year-old girls mostly, right? >> are thinking about their body image, their weight and if they're too fat. that seems quite tragic >> why are these things going up? >> i don't think it's clear and i know the media takes a lot blame, images like these actresses and models who are waif-like. the media does have a responsibility to be cautious and thoughtful because we are looking at this and eating it up, if you will. >> when i was a kid there were skinny models, too. there's something else going on. >> i do think so. i do think mod develops got i don't know skinnier and skinnier. when you think what the ideal beauty was when we were young is different than what it is now. there can be airbrushing that accentuate the thinness even more. >> what are the signs that your teen-ager might have an eating disorder? >> as parent if you're worry about this or even thinking about it you should look, listen, observe. see what's different? are your kid acting differently? are they cutting out whole food groups? are they thinking they're fat when they'reot? are they in the bathroom a lot? have they moved into the gym, exercising all the time. >> so there's an exercise bulimic? >> yes. people who eat but exercise excessively. >> what should do you? confront them and say something is going on with you? i see you're overeating or you're too thin? >> or you've become a vegetarian or vegan all of a sudden. i think you can start with i'm concerned, not accusing them. if they won't talk to you because we know teens can more or less talk to their parents, then suggest they talk to someone else or if there's a problem, they seek help and you help they do that. >> it could be a psychiatric issue, which means you should see a professional. >> an eating dsorder is a psychiatric issue in and of itself. whether it co-mingles with depression or anxiety, treat it. >> thank you very much. and thanks you for watching. good night, everybody. >>> hi, there i'm brooke anderson. this is the "showbiz tonight" news break. here's what's coming up at the top of the hour. deal or no deal? lindsay lohan is saying no deal yet to a plea deal. smart move or big mistake? mel gibson's apparent deal in his domestic violence case. he may not get any jail time. should this deal become a no deal? that's your "showbiz tonight" news break, tv east most provocative entertainment news