Harvard University public health study identify pessimism as a factor that doubles the risk of heart disease .
A pessimistic perspective on life may be harmful to heart health.
Over the course of ten years, the study followed 3,000 men and women between the ages of 52 and 76. Participants were polled prior to the study to gauge how well their outlooks matched up with optimistic and pessimistic personality qualities.
According to the study, males who were assessed to be the least pessimistic were four times as likely to acquire heart disease. The study's most pessimistic participants also had a greater than twofold increased risk of dying from coronary heart disease.
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