Popular actor Michael J. Fox lives with Parkinson's disease. His symptoms include shaking and trembling, signs of a deficiency of the neurotransmitter:

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Parkinson's disease is a neurodegenerative disorder caused by the death of dopamine-producing cells in the brain. Dopamine is a neurotransmitter that helps control movement and coordination. The loss of dopamine leads to symptoms such as tremors, stiffness, and impaired balance and coordination. Medications that increase dopamine levels in the brain are often used to treat Parkinson's disease symptoms.

Popular Actor Michael J