| | MEDICAL RESEARCH (Site not responding. Last check: 2007-10-27) |
 | | Zubieta's research has focused on a particular neurochemical pathway in the brain—the mu-opioid neurotransmitter system—which uses endogenous chemicals called opioids (commonly known as endorphins and enkephalins) to send signals between brain cells to suppress the sensation of pain. |
 | | Further research is needed, he says, to identify the specific genetic markers that might lead to a better understanding of how the balance between estrogen, progesterone, testosterone, and other reproductive hormones affects brain function and increases women's susceptibility to depression. |
 | | But this research points out that not only does the dose make a difference, but so does the sex of the consumer, Kaplan said, adding that the study is consistent with emerging literature showing that soy can have a negative impact on the behavior of male rodents. |
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