Fishwives are keeping their men alive for longer. It's the layabout husbands who are an emotional drain on women .A recent US university study provided unequivocal proof that nagging may actually keep men alive for longer."Sometimes nagging is caring," said the study's author associate Hui Liu, of Michigan State University.The study found that for men an unhappy marriage may actually slow development of diabetes and promote successful treatment once they do get the disease. Why? Because the wife is constantly regulating her husband's health behaviour.South African relationship specialist and sexologist Marlene Wasserman [Dr Eve] agreed , saying it had been proved that men - who often die before their spouses - were not good at taking care of their health."Married men fare better in terms of healthcare and live longer than their single counterparts. It's because they have partners who nag."On the flipside, said Wasserman, marriage is worse for women because their healthcare deteriorates."Marriage for women can be emotionally draining."..