The 42-year-old presenter, who was famously sacked from children’s TV show Blue Peter after he was found with drugs, is in a medically induced coma.
According to The Sun, Richard is fighting for his life after contracting a mystery illness, which caused him to be hospitalised last week.
A source is quoted as telling the publication: “This is an extremely worrying time for everyone who loves him [Richard].
“They had no choice but to put him into a medically-induced coma to save his life, because things spiralled so fast, but that was a week ago and they are no closer to finding out what is wrong with him or how to help him.”
The Big Breakfast presenter was hospitalised on July 5, after visiting the Urgent Care A&E department in Lewisham, on what happened to be the 70th anniversary of the NHS.
Taking to his Twitter that same day, Richard posted a picture of himself lying in a hospital bed, with heart monitors attached to his chest.
The Los Angeles-based presenter revealed he had fallen ill on a flight from the US to London.
“Basically pneumonia. But across two lungs. I’ll be here a few days”
Addressing his 1.32 million followers, he said: “Thank God I got ill in Britain (actually on the way to Britain, was taken off the plane in a wheelchair).
“F*** all the ideology-driven politicians who’ve messed up America’s healthcare system. Viva the NHS. Happy 70th.”
When asked what his ailment was, Richard tweeted: “Basically pneumonia. But across two lungs. I’ll be here a few days.”
It’s thought his condition has deteriorated since then, and it is now unknown what the star is suffering from.
Richard has presented on many high-profile TV shows over the years, including The Big Breakfast and Top of the Pops.
In 1998, he was famously sacked from children’s show Blue Peter after he was found with cocaine.
Earlier this year, Richard revealed he had recently been diagnosed with ADHD — Attention Deficit Hyperactivity Disorder.
Writing for The Sun, Bacon explained his condition causes him to seek out stimulants.
The dad-of-two said: “I drink a lot of coffee, I’ll reach for a drink. And it is no secret I’ve taken drugs like cocaine in the past, which of course saw me get the boot from Blue Peter in 1998.”