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In such a model, DAs ability to selectively signal via high- and low-affinity receptor populations enables -cells and -cells to coordinate with one another to finely tune hormone release according to local DA availability
Other users notice they feel physically and mentally younger with better stamina and mood, while clinicians observe that routine dosing can delay age-associated declines in hormone production
Science 244 , 13601362 (1989)
Research shows levels typically decrease by 10-15% per decade after age 20
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