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.