4. Laughter Prevents Heart Disease
A study at the University of Maryland Medical Center found that people with cardiac disease laughed 40-percent less at life situations than those without cardiac disease.
According to Dr. Michael Miller, MD laughter may have a protective effect. “We don’t know yet why laughing protects the heart, but we know that mental stress is associated with impairment of the endothelium, the protective barrier lining our blood vessels. This can cause a series of inflammatory reactions that lead to fat and cholesterol build-up and ultimately a heart attack.”