Singer Amy Winehouse could suffer a "slow and painful death" from the lung disease emphysema, her father has said.

Mitch Winehouse told Sky News she had "a small amount of emphysema in the top of one of her lungs" but it could become "a lot more serious."

"I want people to understand - even if they give her one cigarette, they're causing her harm," he said.

He added that Winehouse would stop performing live shows "for the foreseeable future".