Laughter and Health
A link between laughter and healthy function of blood vessels was first reported in 2005 by researchers at the University of Maryland Medical Center with the fact that laughter causes the dilatation of the inner lining of blood vessels, the endothelium, and increases blood flow. Drs. Michael Miller (University of Maryland) and William Fry (Stanford), theorize that beta-endorphin like compounds released by the hypothalamus activate receptors on the endothelial surface to release nitric oxide, thereby resulting in dilation of vessels. Other cardioprotective properties of nitric oxide include reduction of inflammation and decreased platelet aggregation.
Laughter has also been shown to have beneficial effects on various other aspects of biochemistry. For example, laughter has been shown to lead to reductions in stress hormones such as cortisol and epinephrine. When laughing the brain also releases endorphins that can relieve some physical pain. Laughter also boosts the number of antibody-producing cells and enhances the effectiveness of T-cells, leading to a stronger immune system.
Laughing 100 times is equal to 10 minutes of rowing or 15 minutes of bike riding.
Read more about this topic: Laugh? I Nearly Went To Miami!
Famous quotes containing the words laughter and, laughter and/or health:
“Laughter and grief join hands. Always the heart
Clumps in the breast with heavy stride;
The face grows lined and wrinkled like a chart,
The eyes bloodshot with tears and tide.
Let the wind blow, for many a man shall die.”
—Karl Shapiro (b. 1913)
“I would not unduly praise the virtue of restraint. It is often merely temperamental. But it is not always a sign of coldness. It may be pride. There can be nothing more humiliating than to see the shaft of one’s emotion miss the mark of either laughter or tears. Nothing more humiliating! And this for the reason that should the mark be missed, should the open display of emotion fail to move, then it must perish unavoidably in disgust or contempt.”
—Joseph Conrad (1857–1924)
“In our great concern about the mental health of children, however, we have overlooked the mental health of mothers. They have been led to believe that their children’s needs must not be frustrated, and therefore all of their own normal angers, the normal ambivalences of living, are not permissible. The mother who has “bad” feelings toward her child is a bad mother.”
—Elaine Heffner (20th century)