Pople who have upbeat outlooks on life have significantly better cardiovascular health, suggests a new study that examined associations between optimism and heart health in more than 5,100 adults."Individuals with the highest levels of optimism have twice the odds of being in ideal cardiovascular health compared to their more pessimistic counterparts," said lead author Rosalba Hernandez, a professor of social work at the University of Illinois. "This association remains significant, even after adjusting for socio-demographic characteristics and poor mental health." Participants' cardiovascular health was assessed using seven metrics: blood pressure, body mass index, fasting plasma glucose and serum cholesterol levels, dietary intake, physical activity and tobacco use -- the same metrics used by the American Heart Association to define heart health and being targeted by the AHA in its Life's Simple 7 public awareness campaign.