This study examined the relationship between psychological well being (using measures of vitality and optimism) and hypertension, finding that high emotional vitality but not optimism significantly predicted a reduced risk of hypertension.
While low levels of negative emotion or high levels of cardiorespiratory fitness are predictors of long-term survival in men and women, being both fit and not unhappy provides a strong combined effect, reducing premature death by 63 percent, according to this study.
