Michael Parkinson appeared on BBC Breakfast on Thursday morning and fans were quick to express their concerns for the TV legend, with some expressing how 'frail' he looked.
The former talk show host, 87, was invited on the the programme to discuss his new book which was written by his son.
Many viewers took to social media commenting on how they didn't recognise the veteran broadcaster who stepped down from his hugely success full show back in 2004.
Parky has kept a very low profile since then and only made a handful of public appearances, writes the Mirror.
Presenter Naga Munchetty asked the much-loved presenter: "Do you get sick of seeing the TV clips?"
To which Michael replied: "Do I get sick of it? Absolutely. I don't recognise the person."
Despite those watching loving seeing him in live TV again, one person did comment about Sir Michael's frail-looking appearance.
Taking to Twitter, one fan said: "Wow. When you haven't seen someone on screen for a long time you expect them to stay looking like that forever. Didn't recognise Michael Parkinson until he spoke."
While another shared: "Sir Michael Parkinson on BBC Breakfast is just," followed by a holding-back-tears emoji." Ken wrote: "@BBCBreakfast look after Parky a true TV legend - he looks frail."
The seasoned journalist interviewed more than 2,000 guests during his stellar career.
Celebs including Tina Turner, Muhammed Ali and Victoria Beckham were all quizzed by the star, who always knew how to get the best out of his guests.
Michael's book is called My Sporting Life: Memories, moments and declarations, and explaining where they got the idea from, he said: "We got the idea because he did a photoshoot for the Daily Telegraph with [cricketer] Geoffrey Boycott and [cricket umpire] Dickie Bird.
"What I began to see is that you had three men there, who were defined by sport - I mean without sport Geoffrey wouldn't have had the career and nor my father have in many ways and Dickie as well.
"I just thought it was an interesting way to look at sport and the importance it had in their life and in many ways also use it as a way to go and revisiting his old articles and just try and just kind of contextualise in a different way.
"It would've been easy to just put them in a compilation but as you try and tell the story, what happened was, his articles told the story of his life."
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