| Substance | Condition | Seq | Src | PMID | Dtl | Title |
| Beta-Carotene | Parkinson's Disease | 2 | PM | 36253999 | 📋 | Dietary β-carotene and vitamin A and risk of Parkinson disease: A protocol for systematic review and meta-analysis |
| Beta-Carotene | Parkinson's Disease | 1 | PM | 32441566 | 📋 | Dietary Antioxidants Associated With Slower Progression of Parkinsonian Signs in Older Adults |
| Beta-Carotene | Parkinson's Disease | 3 | PM | 28386384 | 📋 | Association of serum carotenoid, retinol, and tocopherol concentrations with the progression of Parkinson's Disease |
