Television presenter Paul O'Grady is in hospital after suffering an angina attack, a friend has said.
The 58-year-old comedian, who has had two heart attacks previously, told radio DJ Pete Price he was undergoing surgery today.
In a text message sent to Mr Price yesterday, he said: "I have had an angina attack and I will need a few days' rest.
"I am going to be out of the game for quite a while, and am going in for surgery tomorrow."
Mr Price told the Liverpool Echo that O'Grady had been overworking.
"When I saw he wasn't on TV I texted to ask what had happened and he told me about it. He is a total workaholic, and I have told him he needs to take things easy," he said.
More top news
Charities could face criminal sanctions for bullying the public into giving money, their regulator has warned.
A 'fat tax' could be imposed on the cremation of bodies in Liverpool that require a coffin 30 inches wide or more.
Controversial columnist Katie Hopkins has described her fear that she may die during brain surgery to cure her epilepsy.