Twenty people, average age 50, with type 2 diabetes, hypertension and high cholesterol joined a usual care control group or a laughter group. In addition to standard medication prescribed for diabetes, the laughter group viewed self-selected humor for 30 minutes each day, typically situation comedies or funny movies.

After one year, the laughter group’s “good” HDL cholesterol rose by 26%  compared to 3% for the usual care control group.

 SOURCE: American Physiological Society (April 17, 2009)

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