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BackgroundNo proven disease-modifying therapy exists for Parkinson's disease (PD), and prior single-target antioxidants have shown limited, unsustained benefits, highlighting the need for safe multi-target strategies.ObjectiveTo synthesize how medicine-food homology (MFH) compounds from Traditional Chinese Medicine (TCM)-polysaccharides, saponins/triterpenoids, polyphenols, carotenoids, and aromatic phenylpropanoids-modulate oxidative stress and PD-related neurodegeneration, and to outline formulation routes toward dietary-supplement development.MethodsWe searched PubMed, Web of Science Core Collection, Embase (Ovid), and the Cochrane Library from inception through August 1, 2025 with prespecified concept blocks ("Parkinson's disease," "oxidative stress," Nrf2/ARE, NF-κB, PI3K/Akt, autophagy, and MFH terms). English-language in-vitro, invertebrate, and PD-specific rodent studies, selected epidemiology, and formulation/dose/regulatory reports were narratively appraised; no meta-analysis or tool-based risk-of-bias scoring was performed.ResultsMFH compounds converge on Nrf2/ARE activation, NF-κB suppression, autophagy promotion, and mitochondrial stabilization; nano-/micro-delivery may improve bioavailability and brain exposure in preclinical models. Evidence is predominantly preclinical, with heterogeneous methods and sparse PD-specific randomized trials; epidemiologic signals are suggestive but non-causal. PD-specific oxidative stress arises from dopamine auto-oxidation, neuromelanin-iron catalysis, and complex-I hypofunction; Latest studies further bind these to ferroptosis-linked lipid peroxidation. Clinical evidence remains sparse and PK-limited for MFH actives (e.g., curcumin, EGCG); dose-response, safety monitoring (including liver signals for catechins), and regulatory constraints frame translation.ConclusionMFH compounds are promising, hypothesis-generating candidates for adjunctive nutrition in PD, pending clinical dose-response and long-term safety validation. No clinical efficacy has been established.
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