All articles tagged with #tau tangles
A study of 793 adults found higher vitamin D levels in midlife (around age 39) were associated with fewer tau protein tangles in brain scans about 16 years later; there was no link with amyloid-beta. The results show association, not causation, and researchers say clinical trials are needed to determine if vitamin D supplementation could help reduce dementia risk.
Emerging research suggests stimulating the vagus nerve may help preserve the locus coeruleus, a brainstem hub that regulates norepinephrine and memory, potentially slowing Alzheimer's- and age-related memory loss. Vagus nerve stimulation is already approved for epilepsy, migraine, and depression and may boost brain norepinephrine to support cognitive function. Early studies show memory benefits in mild cognitive impairment and even in healthy adults after brief stimulation, but results are preliminary and more research is needed.
Researchers from the University of Toronto suggest that slower natural speech in older adults reflects a general cognitive-processing slowdown and could be used alongside existing tests to help detect Alzheimer's-related decline earlier. In a task pairing description with recall challenges, individuals who spoke faster tended to generate answers more quickly, supporting the idea that speech rate signals brain changes. The finding aligns with research linking longer pauses and slower speech to higher tau and amyloid brain markers, though more long-term studies are needed to determine predictive value.
A study involving 675 participants found that self-reported cognitive decline and reports from partners are linked to the accumulation of tau tangles, a hallmark of Alzheimer’s disease, emphasizing the importance of early detection and addressing memory concerns.
A Colombian woman in her late 70s who carries a rare variant of the APOE gene, known as the Christchurch mutation, has remained immune to Alzheimer's disease despite it affecting most of her family. Researchers at Washington University in St Louis used genetically altered mice to study the effects of the mutation and found that it enhances the brain's waste disposal cells, making them more efficient at getting rid of tau tangles, a key factor in the progression of Alzheimer's. This discovery may provide new insights into the development of treatments that mimic the effects of the mutation and prevent cognitive decline in individuals at risk of Alzheimer's.