The document discusses the potential relationship between the Mandela effect phenomenon and Alzheimer's disease. The Mandela effect occurs when large groups of people experience memory fragmentation or misremembering of events. This memory fragmentation is thought to be related to neurological degradation associated with Alzheimer's, as degraded recall ability causes the brain to improperly merge similar memories and details. While still being researched, the document suggests the Mandela effect could serve as an early warning sign of developing Alzheimer's due to this type of memory fragmentation.