A gene which regulates the movement of serotonin in the brain has been labeled the "happiness gene" by researchers from the London School of Economics and reported in the Journal of Human Genetics. This is the first study to demonstrate a direct link between an individual's happiness and a specific genetic condition. The researchers measured people's satisfaction with life to define happiness.
Behavioral economist Jan-Emmanuel De Neve, and team gathered genetic information from over 2,500 individuals in the National Longitudinal Study of Adolescent Health. They focused on which functional variant of the 5-HTT gene the participants possessed.
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