Nutritional Management in Parkinson's Disease
Summary
Nutritional management in Parkinson’s disease centres on addressing the spectrum of weight changes, malnutrition and gastrointestinal dysfunction that accompany both motor and non-motor symptoms. Unintentional weight loss is common, driven by increased energy expenditure, dysphagia and altered appetite regulation, and carries implications for disease progression and quality of life. Conversely, some patients may experience weight gain related to dopaminergic treatment or reduced physical activity. Micronutrient deficiencies—including vitamins D, E and B complex—often arise from malabsorption or reduced intake, exacerbating neuroinflammation and muscular weakness. Emerging insights into the gut–brain axis highlight how alterations in the intestinal microbiota can influence metabolic balance, intestinal barrier integrity and central appetite control. Effective management therefore combines regular nutritional screening, individualised dietary counselling, strategic meal timing to optimise pharmacotherapy, targeted supplementation to correct deficits and adoption of energy- and protein-dense diets when required. Multidisciplinary collaboration among neurologists, dietitians and speech therapists underpins interventions aimed at preserving lean body mass, maintaining functional capacity and enhancing overall quality of life.
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Nutritional Management in Parkinson's Disease publication trend
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Technical terms
Dysphagia: Impaired swallowing function that can lead to reduced oral intake and aspiration risk.
Gut–brain axis: Bidirectional communication network between the gastrointestinal tract and the central nervous system involving neural, hormonal and immunological pathways.
Levodopa: A dopamine precursor medication whose absorption is influenced by dietary amino acids.
Short-chain fatty acids (SCFAs): Metabolic byproducts of bacterial fermentation in the colon that support mucosal health and modulate inflammation.
Protein redistribution diet: A dietary approach that shifts protein intake to later in the day to minimise competition with levodopa absorption.
References
- Unravelling the mechanisms of underweight in Parkinson’s disease by investigating into the role of gut microbiome. npj Parkinson's Disease (2024).
- Implication of nutrition in severity of symptoms and treatments in quality of life in Parkinson’s disease: a systematic review. Frontiers in Nutrition (2024).
- Weight Loss and Malnutrition in Patients with Parkinson's Disease: Current Knowledge and Future Prospects. Frontiers in Aging Neuroscience (2018).
- Mechanisms of Body Weight Fluctuations in Parkinson’s Disease. Frontiers in Neurology (2014).
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