Thin, a documentary film produced, aired and distributed by HBO, is the centerpiece of a multi-faceted project that explores the complex issues of body images and eating disorders in young women. Photographer and journalist Lauren Greenfield began documenting eating disorders in 1997, eventually publishing an article for Time Magazine and a book entitled Girl Culture, as well as producing a traveling photographic exhibit. Returning to one of the facilities featured in the exhibit, Greenfield took up residence at the Renfrew Center, an in-patient facility for eating disorders in Florida, to film the day-to-day suffering of four young women struggling with anorexia over the course of six months.

The youngest is Brittany, a sad and troubled fifteen-year old, whose bulimia and anorexia began when she was only eight (her weight bounced from 185 to 95 pounds in one year) and whose mother has her own very unhealthy relationship to food. Brittany is eventually returned to her weight-obsessed mother because of the loss of insurance. Shelly, a twenty-five year-old, psychiatric nurse, has been anorexic for six years and enters Renfrew at 84 pounds with a surgically-implanted feeding tube. Her identical twin visits to plead with Shelly to refrain from slowly killing herself and ultimately destroying their family. Polly is a twenty-nine year old, charming troublemaker whose health is returning but whose defiance of rules eventually gets her kicked out of the facility. The oldest patient is Alisa, a thirty-year old, divorced mother of two whose eating disorder ostensibly developed at age seven when a pediatrician persuaded her mother to put her plump daughter on a severe diet. Alisa's graphic account of a single day of binging and purging is shocking, and her forced release from Renfrew because of problems with health insurance precipitates a return to this pattern after she tucks her children into bed.