Serotonin's Role in Parkinson's Tremor: A New Perspective on Neurotransmitter Involvement

Article published at: Jan 23, 2024
Serotonin's Role in Parkinson's Tremor: A New Perspective on Neurotransmitter Involvement
All Mucuna

 

Serotonin and Parkinson’s Tremor – The Missing Link?

For decades, Parkinson’s disease (PD) has been seen mainly as a dopamine deficiency disorder — and with good reason. Dopamine loss in the brain’s substantia nigra causes hallmark symptoms like slowness, rigidity, and tremor. Yet new research is revealing that serotonin — another key neurotransmitter — may play a bigger role in Parkinson’s tremor than once thought.


Beyond Dopamine: The Role of Serotonin

While dopamine drives movement, serotonin helps coordinate and stabilise it. Serotonergic neurons reach deep into motor-control areas of the brain, and imaging studies now show altered serotonin levels in people with Parkinson’s, particularly in those with tremor-dominant forms of the disease.

In fact, many patients with strong tremor symptoms respond less to traditional dopamine therapies like levodopa, suggesting that serotonin imbalance may be a key underlying factor.


What This Means for Treatment

These discoveries are reshaping how we understand Parkinson’s. Supporting serotonin pathways — alongside dopamine — may offer a more balanced approach to managing tremor and mood.

Functional medicine strategies can include optimising gut health (where most serotonin is produced), using evidence-based nutrients and botanical compounds that support serotonin synthesis, and maintaining steady natural dopamine levels with MacuDopa, which provides HPLC-standardised Mucuna pruriens (a natural L-DOPA source).


Personalised Functional Support

Max Tomlinson N.D., our functional medicine specialist, offers free calls to help identify natural ways of enhancing serotonin production safely and effectively as part of an integrative Parkinson’s plan.

Note: Rasagiline and Hypericum (St John’s Wort) should not be used together except under professional supervision.


By broadening the focus from dopamine alone to include serotonin, we can take another step toward a more complete understanding of Parkinson’s — and more personalised, natural care.


Keywords: serotonin and Parkinson’s tremor, natural dopamine support, Mucuna pruriens, MacuDopa, functional medicine Parkinson’s, natural serotonin support, tremor-dominant Parkinson’s

 

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