George Michael has suffered a series of medical problems since 2011.
The singer, 50, has been out of the spotlight since last year, when he fell out of a car on the M1 motorway and was airlifted to hospital with a head injury.
In 2011 he suffered severe pneumonia which left him temporarily in a coma and meant he needed to undergo a tracheotomy in order to breathe.
He has also battled depression and drug addiction.
More top news
The man jumped the fence while the president and his family were inside celebrating Thanksgiving but was quickly apprehended.
A construction worker in Alabama is lucky to be alive after a 113-year-old smokestack fell on him during an attempted demolition.
Here in Belgium they're describing the Davis Cup Final as the host nation against Andy Murray and in a way it is.