The expert quizzer - who is also a stand-up comic - is taking his latest comedy show to the Edinburgh Festival next month - his third since being diagnosed with Parkinson's in 2019.

He incorporates singing and music in his performance but has revealed he does not know how much longer he will be able to perform it in its current form.

"Eventually I won't be able to play the keyboard at all, so while I still can, I've turned myself into a musical comedian," Sinha told ITV's Good Morning Britain.

"The audience know I can't really sing, and I'm not especially good at the keyboard, but they know that because I've got Parkinson's."

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Sinha, who is known as the Sinha-man on The Chase, said he had a "positive outlook" about his condition, adding: "I think that's really, really important for your own health.

"There's been a lot of discussion obviously today about neurological illnesses for very sad reasons, but I want to reiterate the fact that having a positive attitude is good for your health and will help slow down the disease."

Sinha was referring to TV presenter Fiona Phillips who revealed she had been diagnosed with Alzheimer's.

The 62-year-old former GMTV host was told she had the illness more than a year ago after experiencing months of brain fog and anxiety.

"This disease has ravaged my family, and now it has come for me," she told The Mirror.

"And all over the country there are people of all different ages whose lives are being affected by it - it's heartbreaking. I just hope I can help find a cure which might make things better for others in the future."