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Updated: Jun 9, 2026

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
09:33

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Published on: February 7, 2015

Effect of mirthful laughter on vascular function.

Jun Sugawara1, Takashi Tarumi, Hirofumi Tanaka

  • 1National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan. jun.sugawara@aist.go.jp

The American Journal of Cardiology
|September 7, 2010
PubMed
Summary

Watching comedy movies and experiencing mirthful laughter can improve vascular function. Laughter positively impacts endothelial function and arterial compliance, suggesting benefits for cardiovascular health.

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Area of Science:

  • Cardiology
  • Psychology
  • Physiology

Background:

  • Negative emotions are linked to cardiovascular disease risk.
  • The cardiovascular effects of positive emotions like laughter are less understood.
  • Research is needed to explore the impact of positive emotional states on vascular health.

Purpose of the Study:

  • To investigate the effects of mirthful laughter on endothelial function.
  • To assess the impact of laughter on central artery compliance.
  • To determine if watching comedy movies influences cardiovascular parameters.

Main Methods:

  • A crossover design study involving 17 healthy adults.
  • Participants watched 30 minutes of either a comedy or a documentary (control).
  • Vascular function was measured using ultrasound imaging and applanation tonometry.

Main Results:

  • Mirthful laughter significantly increased brachial artery flow-mediated vasodilation by 17%.
  • Carotid arterial compliance increased by 10% after watching comedy.
  • Laughter-induced changes in arterial compliance correlated with baseline flow-mediated dilation.

Conclusions:

  • Mirthful laughter, induced by watching comedies, has a beneficial effect on vascular function.
  • Laughter positively influences endothelial function and arterial compliance.
  • These findings suggest a potential role for positive emotions in cardiovascular health.