Happy People Are Healthier, Study Suggests

Science & Technology at Scientific American.com: Happy People Are Healthier, Study Suggests
The song "Don't worry, be happy," could double as sound medical advice, the results of a new study suggest. Whereas previous research had linked depression with an increased incidence of health problems, the new findings reveal that people who report more everyday happiness are healthier overall than their less joyous counterparts in a number of key ways. In particular, happy men experienced lower heart rates throughout the day, indicating good cardiovascular health.