United Kingdom, Oct. 18 -- Simon Cowell says he is "ageing backwards".

The 66-year-old music mogul was told he is a year younger after his blood was analysed and filtered at a wellness clinic.

Simon explained in the new issue of Britain's HELLO! magazine: "Based on a number of things, I'm statistically a year younger than I was a year ago.

"I have my blood analysed and filtered at a wellness clinic, and they said I was one year younger. I'm not kidding.

"So this month I will be 64, and the following year, I will be 63 ... you can age backwards if you want!"

Simon - who runs his TV, music and film production firm Syco Entertainment, as well as serves as a judge on Britain's Got Talent and America's Got Talent - has always been a worka...