Why grumpy women live just as long as happy ones

While being sick makes you unhappy, just being grouchy isn't enough to make you ill or shorten your life. Photo / Getty

There's good news for grumpy women: Being happy apparently has no effect on how long you might live.

That's the conclusion of the latest attempt to find out if happy people live longer.

Previous studies have linked happiness to longevity but researchers now say there's no such scientific connection. So while being sick makes you unhappy, just being grouchy isn't enough to make you ill or shorten your life.

The results are based on questionnaires from more than 715,000 British women aged 50 to 69 who were enrolled in a national breast cancer screening program in the late 1990s.

The women were asked things like how often they felt happy and how healthy they were.

Nearly 40 per cent of the women said they were happy most of the time while 17 per cent said they were unhappy. After a decade of tracking the women, four per cent had died.

Scientists found the death rate among unhappy women was the same as those who were happy. The research was published in the medical journal Lancet.

"It's such a common belief that stress and unhappiness causes death and disease but it's actually the other way around," said Richard Peto, a professor at the University of Oxford who was one of the study's authors.

"People should focus on the real issues that shorten their lives, like smoking and obesity."

In an accompanying commentary, French scientists suggested that the results might not be the same in men, since "men and women probably define happiness differently".

AP