fb61bd32_Taking_Nutritional_Supplements__Reasons_for_Caution
[Clinical Problem] Parkinson’s Disease or similar disorder of movement [Potentially Harmful Nutrient] Manganese from: - diet - industrial exposure - supplements [Reasons for Caution] 
Parkinsonism from manganese accumulation in the brain is usually resistant to levodopa treatment and can occur in association with liver disease or a portal-systemic shunt. Chronic anaemia may increase the risk.
Minor Contraindications to Taking Nutritional Supplements
Reasons for Caution