Dopamine |
| Dopamine
is widespread in the brain as well as the rest of the nervous system.
This neurotransmitter plays a critical role in the control of movement.
It has a stimulating effect on the heart, the circulation, the rate
of metabolism, and is able to mobilize many of the body's energy reserves.
It helps to modulate brain activity, control coordination and movement,
and regulate the flow of information to different areas of the brain.
Dopamine is believed to release chemicals that allow
us to feel pleasure (e.g., endorphins). A massive disturbance of dopamine
regulation in the brain can result in a person no longer being able
to respond emotionally or express his or her feelings in an appropriate
way (e.g., schizophrenia).
The main precursor for this neurotransmitter is the nonessential amino acid tyrosine. While tyrosine is contained in many foods, it is classified as a nonessential amino acids because ordinarily our bodies can create it. Still, deficiencies in the production of tyrosine can occur, and increased dietary supplementation may be necessary. Folic acid, niacin, iron, and B-6 are necessary cofactors. Dopamine Functions in:
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