Word: serotonin
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According to research done at University of Colorado at Boulder, exercise has been proven to prevent the development of depression anxiety, among other stress-related disorders. In the experiment, lab rats were exposed to a stressor, and those that had been allowed to exercise had increased levels of serotonin, the chemical that regulates mood, and were shown to be less anxious and stressed than the rats that were not allowed to exercise. Exercise, in a sense, is a natural antidepressant. Other scientific research has also shown that exercise increases the development and maintenance of brain cells, as well...
Using various molecular techniques, researchers examined tissue samples for markers of serotonin and other hormones...
...most consistent abnormality that we have found in our research is in levels of serotonin,” Kinney said...
...investigators found that serotonin levels were 26 percent lower in the tissue samples collected from infants that died from SIDS. The levels of tryptophan hydroxylase, an enzyme needed to make serotonin, were also 22 percent lower...
While Kinney said that there are currently no specific tests to detect abnormalities in serotonin levels, she encouraged parents to continue to ensure that their children’s breathing is uninhibited during sleep in hopes of preventing SIDS...