A Countdown star has revealed that she underwent a secret health battle for 10 years which forced her to change her diet.

Rachel Riley, who presents Countdown and its comedy spin-off 8 Out Of 10 Cats Does Countdown recently broke her silence about the long-running battle to reporters.

The star, who is also a mathematician, co-hosts the daytime puzzle show and has starred in other programmes like The Gadget Show.

Speaking with the Mail Online, the Channel 4 TV icon said: "We are all vegan in the house, and you just try and do small things. 

"In 2018, Pasha and I went vegan and there were loads of reasons but I was ill with food, so I cut eggs and dairy and I started eating in vegan restaurants and realised the food was really good and we didn't have to eat meat and then we gave up fish.

"When I got pregnant, I just took a few food supplements, and it was all good."

The Countdown star admitted that her doctors were "useless" to help her and that it wasn't until she changed her diet that her symptoms improved.

She added: "I was ill for over ten years and the doctors were quite useless about it and I gave up some foods and was literally so much better overnight.

"I didn't realise how bad I was feeling until I wasn't feeling bad."

This comes after the 34-year-old revealed her 'feud' with co-star Anne Robinson.

Speaking about the relationship, she said: "Anne was a lot more headmistress style and that suits some people, and some people enjoyed it.

"I don't think it's any secret that I am enjoying working with Colin [Murray] a lot more."

Countdown and 8 Out Of 10 Cats Does Countdown air on Channel 4.