Madonna diet to 'knock off 12 years'

Madonna has reportedly started a new diet that will knock years off the singer's appearance.

The star has signed up health experts in a bid to halt the aging process, according to The Mirror.

"The new 'retox' means she has got a more cardio-intensive gym regime and a diet overhaul. She will also be eating a lot more salmon as it's got age-defying properties," a source said.

"Her aim is to knock 12 years off her appearance."

The singer's "obsession" with her body image is rumoured to have partly attributed to the breakdown of her marriage to film director Guy Ritchie.