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Why Happiness is Healthy

Genetics play a big role in happiness, according to Nancy Segal, Twin Studies Expert

April 3, 2015

Where happiness comes from: genes + environment.

There is substantial evidence that genetics play a big role in happiness, according to Nancy Segal, psychologist at California State University, Fullerton, and author of "Born Together -- Reared Apart."

Research has shown that identical twins tend to have a similar level of happiness, more so than fraternal twins. And in identical twins, one twin's happiness is a better predictor of the other twin's current or future happiness than educational achievement or income, Segal said. Read the full article online.

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