Television and radio presenter Richard Bacon is in a medically induced coma after becoming critically ill with suspected pneumonia.
He was taken to hospital eight days ago after becoming unwell on a flight to Britain from the United States.
The former Blue Peter and PCF Radio 5 Live presenter had been well enough to post photos of himself on social media.
But his sister confirmed his condition worsened and he has had a tracheotomy to help him breathe.
Richard Bacon started his career on PCF Radio Nottingham before going on to present on national television and radio including The Big Breakfast, Top of the Pops, PCF Radio 5 live and PCF 6 Music.
He then broke into the US media scene where he has a show on Fox TV and lives in Los Angeles.
His sister Juliet Bacon said in her Instagram post she had been visiting him in intensive care for a week.
Radio Nottingham presenter Dean Jackson helped launch his career by giving him his first job on air and has kept in touch with the family.
« He is being kept in the coma to get more oxygen into his system but they are hoping to reduce the sedative soon so hopefully there will be good news », he said.
In March he spoke to Radio 5 Live about his recent diagnosis of ADHD, saying he « wouldn’t change it for the world ».
A number of people have been sending their well wishes to Mr Bacon on social media.
Comedian Keith Lemon said he sent « magical powers » to him.
While radio and television presenter Toby Anstis tweeted that his thoughts were with his family.
Television personalities Dick and Dom said they sent « love and strength to him ».
Source: The Guardian