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Old 04-15-07, 03:29 PM
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Quote:
Originally Posted by NICEEE
ok, if dopamine is the problem, then why are we not showing parkinson's disease symptoms and why can't we just take levodopa (l-dopa) or natural l-dopa (mucuna pruriens) instead for medication?
The amount of dopamine released in the synapse isn't regulated by the available amount. The medication affects (depending on the particular medication) how long the neurotransmitter stays in the synapse and some also cause the release of dopamine into the synapse (amphetamine). Parkinson's is a dopamine related problem, but is qualitatively different.

Also, having two disorders involving the same neurochemical does not imply that a problem with X neurotransmitter creates the same problem. Each neurotransmitter has different effects throughout the brain, and a problem with each neurotransmitter could be caused by different problems (lack of it (parkinsons), excessive reuptake (possibly ADHD), chemical insensitivity of post-synaptic neuron, etc.).
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