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.
Read more about this topic: Laughter In Literature
Famous quotes containing the words laughter and, laughter and/or health:
“If she must teem,
Create her child of spleen, that it may live
And be a thwart disnatured torment to her!
Let it stamp wrinkles in her brow of youth,
With cadent tears fret channels in her cheeks,
Turn all her mother’s pains and benefits
To laughter and contempt, that she may feel
How sharper than a serpent’s tooth it is
To have a thankless child!”
—William Shakespeare (1564–1616)
“My beards, attend
To the laughter of evil: the fierce ricanery
With the ferocious chu-chot-chu between, the sobs
For breath to laugh the louder, the deeper gasps
Uplifting the completest rhetoric
Of sneers....”
—Wallace Stevens (1879–1955)
“I am astonished at the singular pertinacity and endurance of our lives. The miracle is, that what is is, when it is so difficult, if not impossible, for anything else to be; that we walk on in our particular paths so far, before we fall on death and fate, merely because we must walk in some path; that every man can get a living, and so few can do anything more. So much only can I accomplish ere health and strength are gone, and yet this suffices.”
—Henry David Thoreau (1817–1862)