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Sleep Spindles Linked to Slower Cognitive Decline in Alzheimer’s Study
A three-year study of 60 adults with mild to moderate Alzheimer’s disease found that higher cerebrospinal-fluid orexin levels were associated with cognitive decline and disease-related biomarkers. Stronger sleep spindles and slow oscillations during nonrapid eye movement sleep appeared to weaken that relationship, although the findings do not establish that sleep brain waves prevent disease progression.
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