Eamonn Holmes has admitted he fears having to rely on a wheelchair if he does not rebuild strength in his back.
The 61-year-old This Morning presenter has been battling chronic pain since the start of the year, and admitted he is in "a race against time" to do physiotherapy before his steroid injections wear off.
Holmes told Metro.co.uk: "I have no idea why in such a short space of time you go from being healthy to being told your nerves are dead in your leg because of your back and it might take a year before there’s improvement, and you’ve no choice but to do the exercises otherwise you’ll be sitting in a wheelchair."
He added: "For me, I’m in a race against time to strengthen my back before my steroid injections - which do ease the pain - run out."
And Holmes admitted he was struggling to stay positive as the pain was still so bad.
He said: "It’s quite depressing because every day you get up and hope you’ve done better and you have treatment and it still hurts like hell!"
Holmes struck a chord with many of his one million Twitter followers when he started opening up on social media in the early hours of the morning about his struggle to sleep while suffering from such intense pain.
The former GMTV presenter said his pelvis "mysteriously" dislocated earlier this year and put his back out a alignment as a result.
He said he now “can’t remember what life was like without the pain”.
Holmes underwent a double hip replacement in 2016. The surgery was carried out in a bid to tackle excruciating hip, leg and back pain he had secretly suffered for more than 20 years.
He proudly announced in April that he is to become a grandfather for the first time.
Declan, 32, - the eldest of three children Holmes shares with his first wife Gabrielle Holmes - is expecting a baby with his partner Jenny.
Watch: Ruth Langsford defends how she treats husband Eamonn Holmes