Watching a funny movie or sitcom that produces laughter has a positive effect on vascular function and is opposite to that observed after watching a movie that causes mental stress according to research conducted at the University of Maryland School of Medicine in Baltimore, Maryland.

     

    "The idea to study positive emotions, such as laughter came about after studies had shown that mental stress caused blood vessels to constrict," says Dr. Michael Miller, Professor of Medicine and lead investigator.

     

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