BBC NEWS | Health | Happy moments 'protect the heart':
Happiness was more commonly linked to leisure, rather than work
Every moment of happiness counts when it comes to protecting your heart, researchers have said.
A team from University College London said happiness leads to lower levels of stress-inducing chemicals.
They found that even when happier people experienced stress, they had low levels of a chemical which increases the risk of heart disease.
The research is published in Proceedings of the National Academy of Sciences.
This shows that people who are happy and unstressed are likely to have less potentially dangerous stress chemicals in their bodies
Professor Peter Weissberg, British Heart Foundation
It showed that those who were happy less often had higher levels of a bloodstream chemical called plasma fibrinogen, which shows if there is inflammation present."