The secret to a longer life is to marry someone the same age, at least if you are a woman, researchers say…

Health records have shown previously that men live longer if they have a younger wife, an effect researchers expected to see mirrored in women who married younger men.

But a study by Sven Drefahl at the Max Planck Institute for Demographic Research in Rosktock, Germany, shows that the greater the age gap between a woman and her husband, the shorter her life expectancy, regardless of whether he is older or younger.