Circadian Rhythms
Alzheimer’s disrupts circadian rhythms in brain cells, mouse study finds
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Researchers at Washington University School of Medicine in St. Louis report that amyloid pathology in mouse models of Alzheimer’s disease disrupts circadian rhythms in microglia and astrocytes, altering the timing of hundreds of genes. Published October 23, 2025, in Nature Neuroscience, the study suggests that stabilizing these cell-specific rhythms could be explored as a treatment strategy.
A small study suggests that sitting by a window to receive natural daylight can help manage blood sugar levels in people with type 2 diabetes. Researchers found that participants exposed to natural light spent more time within healthy glucose ranges compared to those under artificial lighting. The findings highlight the role of circadian rhythms in metabolic health.