The legendary TV presenter hinted at his deteriorating condition with his last Keith Chegwin Twitter post.
It was announced on Friday that Liverpool-born star Keith had passed away, aged 60, after suffering with progressive lung condition idiopathic pulmonary fibrosis.
Addressing his medical struggles, he told his 174,000 Twitter followers back in September: "Still not right. I will be back - But not for a bit yet. I'm so sorry."
Before this in June, he wrote: "Apologies for not tweeting. Back as soon as Xxx, promise."
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“Still not right. I will be back - But not for a bit yet. I'm so sorry”
Keith Chegwin
Fans have now began leaving tributes on the tweets.
One wrote: "Sad news, taken too young. A huge part of our childhoods with Swap Shop and especially Cheggers Plays Pop. RIP."
Another added: "RIP you lovely man. Brought joy and laughter to so many. You will be missed."
Celebrity friend and colleagues have also been leaving their tribute messages online.
Stars we've lost in 2017

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Former professional boxer Frank Bruno told his 74,500 followers: "Saddened to hear this, what a great guy! I worked with him a lot over the years a great entertainer, you will be missed RIP Keith Chegwin."
While actor and comedian Bobby Davro also added: "I have known Keith Chegwin for many years. He was one of the nicest guys I've ever met in this biz I had been told he was very poorly but unable to contact him for a while.
"What a dreadful shame to lose such a lovely friend. Love to his family RIP Cheggers! I'll miss that smile."
In a statement released to the press, Chegwin's family said: "We are heartbroken to share the news that Keith Chegwin sadly passed away following a long-term battle with a progressive lung condition, idiopathic pulmonary fibrosis, which rapidly worsened towards the end of this year.
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"Keith died peacefully at home shortly after midnight on the 11th of December. His wife Maria, his daughter Rose and his son Ted were by his side."
The statement continued: "We would like to take this opportunity to thank Severn Hospice for the kindness, support and care they have shown us all over the last few weeks.
"Keith was a loving husband, father, son, brother, uncle and friend. We would respectfully ask to be left to mourn his passing in private."