Sharon Osbourne is "terrified" she'll die from Alzheimer's disease.

Sharon Osbourne has revealed she's terrified of following in her father's footsteps by developing Alzheimer's after medical tests found she has two of the four genes responsible for the disease.

Sharon and husband Ozzy Osbourne underwent a genome test and found she has two of the four genes responsible for developing the debilitating disease.

She said: "Ozzy and I had these tests done at a university in England, and the results took three months to come back.

"They test every single cell, chromosome and gene in your body; it's like a DNA test but a million times more sophisticated.

"The results show I have two of the four genes that give it to you. They're not the two major genes, but they're still there and I have them."

The former 'X Factor' judge's music mogul father Don Arden passed away aged 81 in 2007 after battling the devastating form of dementia and Sharon - who has children Kelly, Jack and Aimee with Ozzy - admits she feels powerless in stopping the same from happening to her.

She told the Daily Mirror newspaper: "I was terrified because my dad died from Alzheimer's.

"It is the most soul-destroying disease. To see someone you love come down with it... it's wicked, it really is.

"There is nothing I can do to prevent it, nothing. People say take cod liver oil and do puzzles and thing, but then I look at people diagnosed with dementia.

"My father was super active mentally, and take Margaret Thatcher, Ronald Reagan... they were all so active, and that's what really frightens me."

Sharon's a part of the new Money Supermarket ad, which you can see in full at the following link: http://www.moneysupermarket.com/hubs/epicstrut/.

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