A Zurich university study claims that those who consider themselves to be in good health tend to live longer.

In the ’70s over 8,000 people were asked to rate their health.

Participants were also given a checkup at the same time.

Three decades later, the study has shown that men who described their health as “very poor” were 3.3 times more likely to have died by now than those who had felt “very well.”

Among the women, the the likelihood of death was 1.9 times higher.

The researchers took into account factors such as whether people smoked, had a chronic illness, took medication or had blood pressure problems.