haugen talked about how facebook's instagram can harm teenagers, an allegation staffers for senator blumenthal explored. by logging on. donie o'sullivan reports. >> what we did was to create a 13-year-old who expressed interest in weight loss and dieting, and within a day she was flooded with recommendations for accounts concerning eating disorders and personal injury. >> reporter: he wanted to see what it was to be like a teenager struggling with an eating disorder on instagram. they set up an account registered as belonging to a 13-year-old girl. the result, instagram's algorithm suggested they follow pages that promote eating disorders, with names like i have to be thin, eternally starved, and skin and bone. >> what is super tragic is facebook's own research says as these young women begin to