Psychiatric News (4/25) reported a new study in Alzheimer’s & Dementia finds that too much sleep per night may effect cognitive function – particularly for adults with depression. Overall, “compared with participants with average sleep, those with long sleep had poorer performance in global cognition, executive function, visuospatial memory, and verbal learning/memory tasks.” Researchers wrote, “These findings suggest that sleeping ≥ 9 hours per night is associated with cognitive differences equivalent to 6.5 years of brain aging.” Further, “the strongest negative associations between long sleep and cognition were among individuals with depressive symptoms, regardless of antidepressant usage.
Related Links:
— “Long Sleep Duration Linked to Poorer Cognitive Performance,” Psychiatric News, April 25, 2025