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Heart Attack
'Runner's high' may also strengthen hearts
November 20th, 2007
Endorphins and other morphine-like substances known as opioids, which are released during exercise, don't just make you feel good -- they may also protect you from heart attacks, according to University of Iowa researchers. It has long been known that the so-called "runner's high" is caused by natural opioids that are released during exercise. However, a UI study, which is published in the online edition of the American Journal of Physiology's Heart and Circulatory Physiology, suggests that these opioids may also be responsible for some of exercise's cardiovascular benefits. Working with rats, UI researchers showed that blocking the receptors that...
Source: Science Letter (2007-11-20)
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