Once you reach the age of 90, you stop ageing, according to Michael Rose, a professor of evolutionary biology.

Professor Rose suggests that you should start a ‘Stone Age’ diet from the age of 30.

The diet should include fruits, nuts, seafood and vegetables and grains and dairy products should be avoided.

For those in doubt, the University of California professor practises what he preaches. He says: ‘I have been following such a diet – avoiding grass-derived foods, such as grains, rice, corn and sugar cane, and anything made from milk – for two years and the results have been good.’

Statistics have shown that ageing seems to come to a halt at 93 and does not start again until we get a telegram from the Queen.

Queen Elizabeth II is currently celebrating her 90th birthday.

To read more about the ‘Stone Age’ diet, please CLICK HERE.