130729161952-largeA person’s sense of happiness may affect the way his or her genes are expressed, Medical News Today reported.

Researchers from the University of California, Los Angeles (UCLA) categorized 80 healthy adults based on whether they experienced a greater sense of eudaimonic well-being or hedonic well-being. Eudaimonic well-being is associated with having “a deep sense of purpose and meaning in life,” while hedonic well-being is linked with complete self-gratification.

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