Laughter, The Best Medicine
If you have ever read a Readers Digest Magazine, they have a section called “Laughter, the Best Medicine.” I remember growing up reading that section and that was before it was scientifically proven to be correct.Laughing is a reaction to certain stimuli. It may ensue from hearing a joke, being tickled, or other stimuli. Most commonly, it is considered a visual expression of a number of positive emotional states, such as joy, mirth, happiness, relief, etc. However on some occasions it may express other emotions, such as embarrassment (nervous Laughter), apology or confusion. (1)
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. (1)
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. 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. (1)
In the last few decades, researchers have studied laughter's effects on the body and turned up some potentially interesting information on how it affects us: (2)
• Blood flow. Researchers at the University of Maryland studied the effects on blood vessels when people were shown either comedies or dramas. After the screening, the blood vessels of the group who watched the comedy behaved normally -- expanding and contracting easily. But the blood vessels in people who watched the drama tended to tense up, restricting blood flow.
• Immune response. Increased stress is associated with decreased immune system response. Some studies have shown that the ability to use humor may raise the level of infection-fighting antibodies in the body and boost the levels of immune cells, as well.
• Blood sugar levels. One study of 19 people with diabetes looked at the effects of laughter on blood sugar levels. After eating, the group attended a tedious lecture. On the next day, the group ate the same meal and then watched a comedy. After the comedy, the group had lower blood sugar levels than they did after the lecture.
• Relaxation and sleep. The focus on the benefits of laughter really began with Norman Cousin's memoir, Anatomy of an Illness. Cousins, who was diagnosed with ankylosing spondylitis, a painful spine condition, found that a diet of comedies, like Marx Brothers films and episodes of Candid Camera, helped him feel better. He said that ten minutes of laughter allowed him two hours of pain-free sleep.
(1) Wikipedia – Laughter
(2) http://www.webmd.com/balance/features/give-your-body-boost-with-laughter
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