Lindsay Lohan, the 19-year-old actress of such films as "Mean Girls" and "Herbie Fully Loaded", lost weight dramatically due to unbearable stress during her parents' break-up.

According to Hollywood.com, Lohan's father Michael made this admission. The actress came under intense media scrutiny after she was photographed looking dangerously thin.

Michael is currently serving a prison sentence in New York over charges of drunk driving and assaulting his brother-in-law. He is separated from Lindsay's mother, and cites that as the main cause for Lohan's condition.

He said: "People wonder why Lindsay's so thin. It's because of all this garbage between her mother and me. She's beaten up inside. It's ripped our whole family apart."