Soul diva Amy Winehouse has damaged her lungs by smoking crack cocaine and cigarettes, her father said in an interview published Sunday in Britain.

The Sunday Mirror quoted Mitch Winehouse as saying that Amy has early stage emphysema and an irregular heartbeat and has been warned that she will have to wear an oxygen mask unless she stops smoking drugs.

"The doctors have told her if she goes back to smoking drugs, it won't just ruin her voice, it will kill her," Mitch Winehouse was quoted as saying. "There are nodules around the chest and dark marks. She has 70 percent lung capacity."

Winehouse, 24, collapsed at her north London home last week after signing autographs for a group of fans and was taken to a London hospital for tests.