Amy once again rushed to the ER

Grammy-winning singer Amy Winehouse was taken to an emergency room at a London hospital Monday night, her spokesman said.

An ambulance took the singer who lost a lot of weight during the last weeks from her north London home to the emergency room at University College Hospital, spokesman Chris Goodman said. He said he did not know what might be wrong with the 24-year-old singer.

Winehouse's musical success has been overshadowed by her tumultuous private life and public struggles with drugs and alcohol. Her father has said she developed early stage emphysema from smoking cigarettes and crack cocaine.

London Ambulance Service said it was called to an address in north London at 8:40 p.m.