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Old 04-18-07, 01:01 AM
nzkiwi nzkiwi is offline
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Parkinson's is believed to be caused by decreased dopamine activity, specifically in the substantia nigra and the locus coeruleus. L-dopa increases dopamine in the brain, but not necessarily in the areas of the brain involved in adhd(frontal cortex, etc). It's not just the total level of dopamine in the brain, but the levels in specific areas that causes disease and disorders. The brain is a complex organ(three pound universe).
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