People who are outgoing, optimistic, easygoing, and have a good sense of humor and a large social network are likely to live longer than others who don't possess these personality traits, according to new research.

The study reveals how saying "Itís in their genes" could refer to more than just genetic variations that give a physiological advantage like having high levels of HDL ("good") cholesterol because people with positive personality traits appear to live longer than those who do not.

The latest findings suggest that people who are born to be happy are also born to live longer.

Past research has found that personality, which arises from underlying genetic mechanisms, may play a direct role in affecting health, but up until now it was not clear whether individual temperaments also affected longevity.

Researchers at Albert Einstein College of Medicine and Ferkauf Graduate School of Psychology of Yeshiva University found that people who are more likely to enjoy laughter and stay involved in activities may have "personality genes" that contribute to the longevity genes mix.

The study, published recently in the journal Aging (, is based off of data from the Einstein's Longevity Genes Project, which includes over 500 Ashkenazi Jews over the age of 95 and 700 of their children.

(via Slashdot -