The study conducted at Germany’s Max Planck Institute discovered that man who tie the knot with a younger woman live a long life.

The study also said that men those marry with older women are more likely to die early.

According to the researchers, blokes can slash the risk of premature death by 11% if they marry woman seven to nine years younger.

A man's chances of dying prematurely are cut by a fifth if their wife is between 15 and 17 years younger.

“Another theory is that a younger woman will care for a man better and therefore he will live longer,” said institute spokesman Sven Drefahl.

The study outcomes also suggested that women do not have the same advantages of marrying a toy boy or a sugar daddy.

Wives having hubbies older or younger by between 7 to 9 years raise their chances of deceasing early by 20%.

The same risk rises to 30% if the age difference is around 15 to 17 years.

Scientists said that the figures for men may be the result of natural selection – that only the good-looking, rich older men are capable of attracting younger mates.

The researchers analyzed deaths between 1990 and 2005 for the whole population of Denmark.

On average in Europe, the majority of men marry women around three years younger.