gelotologist

Etymology
From.

Noun

 * 1) A person who studies humour and laughter
 * 2) * 1994 Paul M. Insel, Core concepts in health, Mayfield Pub. Co., p31
 * Fry, who calls himself a gelotologist (from the Greek root gelos, meaning laughter), says laughter defuses anger, lifts depression, increases alertness, enhances learning, promotes creativity and cooperation, fosters mental health
 * Fry, who calls himself a gelotologist (from the Greek root gelos, meaning laughter), says laughter defuses anger, lifts depression, increases alertness, enhances learning, promotes creativity and cooperation, fosters mental health