Metabolic HealthAmylin Links Type 2 Diabetes to Alzheimer's and Parkinson's Disease
Type 2 diabetes may be far more than a blood sugar problem. This review argues that amylin — a protein secreted alongside insulin by pancreatic beta cells — misfolds and aggregates in ways that destroy beta cells and, critically, seed the same toxic protein clumps seen in Alzheimer's and Parkinson's disease. Through a mechanism called prion-like cross-seeding, amylin interacts with beta-amyloid, tau, and alpha-synuclein, potentially explaining why people with type 2 diabetes face significantly elevated dementia risk. The review surveys emerging therapies including non-fibrillating amylin analogues, cross-amyloid inhibitors, conformation-specific immunotherapies, and AI-designed molecular binders that could block amylin's toxic form while preserving its normal metabolic function.
