Davina McCall has admitted she used to worry a lot about cancer after losing her sister to the disease.

Davina McCall This Morning ITV

The TV presenter was devastated when her half-sister Caroline Baday passed away in August 2012 at the age of 50. Now 50 herself, Davina admits her sibling’s death has driven her to stay fit and healthy.

Although she used to agonise over her chances of getting cancer, Davina knows she can just try to be as healthy as possible and let fate dictate the rest.

The mother-of-three told the Daily Mirror, “One in two of us is going to end up with cancer. Cancer used to play on my mind.

Davina McCall sister Caroline Baday

“Quite close to Caroline’s death I definitely would think about every niggle, ‘Oh, is this cancer?’.

“Now I just think I am doing everything I can to stay fit and healthy… and life is what it is.”

After battling alcoholism and drug addiction in her twenties, Davina has been clean for years and is now widely regarded as one of the fittest people on TV.

The former Big Brother host has released a series of best-selling fitness DVDs, as well as healthy eating books, such as Davina’s 5 Weeks To Sugar-Free.

While Davina admits she loves exercising, she refutes claims she is ‘addicted’ to fitness.

She explained, “People often ask ‘Are you addicted to exercise?’ Chance would be a fine thing. I have got a very busy job and three children so I can’t be addicted to exercise.

“But if you are going to enjoy something, it may as well be something that’s good for you.”

Davina regularly takes part in charity events to raise money for cancer research and treatment, most recently Race For Life in Blackheath, south-east London.

The Long Lost Family presenter had another loss this year when her beloved grandmother Pippy died in June at the age of 98.

Pippy and her husband raised Davina from the age of three until 13 after her French mother Florence Kock returned to Paris following the breakdown of her marriage to the TV star’s father Andrew McCall.

Davina was estranged from Florence at the time of the latter’s death in South Africa in 2008.

Words by Emily Sheridan.