Adding metformin to sulfonylurea treatment may significantly cut the increased risk of Parkinson's disease seen in patients with diabetes, according to a study in Parkinsonism and Related Disorders. "An exciting aspect of the finding is that metformin seems to be working to protect the brain against neurodegeneration, which contributes to [Parkinsonism]. This means it may also be considered a relevant therapy for the prevention of dementia as well," lead author Mark Wahlqvist said.

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