Texan woman, 21-year-old, eat every 15 minutes to stay healthy. Miss Lizzie Velasquez has a rare condition which prevents her from gaining weight even though she eats up to 60 small meals a day.
Despite consuming between 5,000 and 8,000 calories daily, the communications student, has never tipped over 4st 3lbs.
"I weigh myself regularly and if I gain even one pound I get really excited," said 5ft 2 ins Miss Velasquez, who wears size triple zero clothes, Telegraph.co.uk reports.
Velazquez is involved in a genetic study run by Professor Abhimanyu Garg at the University of Texas Southwestern Medical Center in Dallas.
Garg now believes she could suffer from Neonatal Progeroid Syndrome (NPS), which prevents people from gaining weight and often gives their faces a triangular shape and a pinched nose. The rare disease causes accelerated aging, tissue degeneration and loss of fat from the face and body.
"We cannot predict what will happen to Lizzie in the future as the medical community are yet to document older people with NPS,” Garg said. "However Lizzie is lucky to have healthy teeth, organs and bones so the outlook is good. We will continue to study her case and learn from her."
Previously, Velazquez’s case left doctors and genetic experts scratching their heads, FOXNews says.