Serotonin
Main Entry: se·ro·to·nin
Pronunciation: sir- - t -n n, ser-
Function: noun
: A phenolic amine neurotransmitter C10H12N2O that is a powerful vasoconstrictor and is found especially in the brain, blood serum, and gastric mucous membrane of mammals -- called also 5-HT, 5-hydroxytryptamine
Serotonin affects mood, hunger, sleep and arousal. Prozac and other similar antidepressant drugs raise serotonin levels. Genes act by directing biochemical events that, down the line, influence behavior. The biochemical key is the neurotransmitters, those messenger molecules that shuttle signals between nerve cells. Norepinephrine, a neurotransmitter that increases arousal and boosts mood, is overabundant during mania, and scarce during depression. A second neurotransmitter, serotonin supplies by blocking either their reuptake (as Prozac, Zoloft, and Paxil do with serotonin) or their chemical breakdown. Repetitive physical exercise, such as jogging, also increases serotonin and helps reduce depression. As you ger older, it is likely that the levels of serotonin in your bran will start to decrease, and supplements may be necessary. This is one of the theory's Dr. Spears talks about when he discusses diet and nutrition
Klotho Anti-Aging Gene. Nov. 5 2005. Copyright © 2002-2004. Technovelgy LLC.
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