Twenty-three-year-old Lizzie Velasquez was born without any adipose tissue - meaning she has no fat on her body.
As a result, she weighs just 58 pounds, even though she eat as many as 60 times a day, the Daily Mail reported. she has been the subject of cyberbullying and stares when she walks out in public, she recently revealed to Dr. Drew Pinsky on HLN.
Some cyberbullies even dubbed her the "ugliest woman in the world," because of her appearance due to her medical condition, she said.
"It's not easy, I will be the first to tell you it's not easy," Velasquez told Dr. Drew. "I may have this outer exterior of people saying, 'She can handle everything, she's dealt with this for so long,' and to be honest, I'm human and of course these things are going to hurt."
Back in 2010, The Telegraph reported that Velasquez consumes 5,000 to 8,000 calories a day -- eating food every 15 minutes. But because of the condition, the Texas State University in San Marcos student has never weighed much more than 60 pounds, she wrote in the description of her book that came out earlier this year, titled "Be Beautiful, Be You."
Velasquez's condition is extremely rare; she is just one of three people in the entire world to have it, she noted in her book description.
The Telegraph reported that doctors believe she may have something called Neonatal Progeroid Syndrome. It is a condition that leads to premature aging, but is different from the more common aging disorder, progeria, according to the National Institutes of Health. It is characterized by wrinkled skin, not much fat, a large head, a face that looks aged and visible veins in the scalp.