There's a troubling trend that's spreading across social media sites.
It's called "Thinspiration" and it encourages young girls to be anorexic and bulimic.
It's a teenage underworld promoting eating disorders that has gone viral on Facebook, Tumblr and Pinterest.
"I was like 'hey'," 16-year-old Megan Gunnip said. "It kind of clicked. If you don't want to weigh as much you don't eat as much."
Meagan is anorexic. After seeing skinny photos of her friends on Facebook and endless shots of unrealistically tiny women online, she decided to slim down, fast. What she found online gave her that 'thinspiration', to head down a dangerous path.
"A lot of it is just based off of the competition," Gunnip said. "Who can be skinnier. If so and so looks like this, I can too."
The obsession with skinny is nothing new -- magazines and movies have long promoted the ultra-thin. But social media has given eating disorders a new, bigger platform to reach the masses.
"It is the social media that really is the virus that gets these images in front of people all the time," Dr. Margo Maine, National Eating Disorder Association Founder said.
Dr. Maine says social media makes these images almost impossible to ignore.
"When people are looking at them, they tend to be alone," Dr. Maine said. "So there isn't any corrective feedback. There's no one saying 'that's really stupid, nobody can really be that thin and be healthy.'"
Even so, users post notes to push each other to eat less.
The photos got so bad that this spring, Tumblr, Instagram and Pinterest pushed back, implementing new policies taking down pro-anorexic and pro-bulimic material.