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'Don't Worry Be Happy': Happiness key to longer life
(Agencies)
Updated: 2008-08-14 14:44

In Veenhoven's findings, published in the Journal of Happiness Studies, a scientific publication founded in 2000, the strongest effect on longevity was found among a group of US nuns followed through their adult life -- perhaps reflecting the feel-good factor from belonging to a close-knit stress-free community with a sense of purpose.

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While the lyrics from the Grammy-award 1989 "Be Happy" hit were inspired by popular Indian guru Meher Baba, nowadays, in more than 100 countries, from Bhutan in the Himalayas to the US and Australia, economists are working to put "happiness" indicators (a new kind of quality-of-life index) into the measurement of growth.

Happiness itself, according to the specialists, is generally accepted as "the overall appreciation of one's life as a whole", in other words a state of mind best defined by the person questioned.

In his paper, Veenhoven first looked at statistics to see whether good cheer impacted on the sick, but concluded that while happiness had helped some cancer patients suffering from a relapse, in general "happiness does not appear to prolong the deathbed."

Among healthy populations, on the contrary, happiness appeared to protect against falling ill, thus prolonging life.

Happy people were more inclined to watch their weight, were more perceptive of symptoms of illness, tended to be more moderate with smoking and drinking and generally lived healthier lives.

They were also more active, more open to the world, more self-confident, made better choices and built more social networks.

"For the time being we know that happiness fosters physical health, but not precisely how," he wrote.

"Chronic unhappiness activates the fight-flight response, which is known to involve harmful effects in the long run such as higher blood pressure and a lower immune response."