Don’t Sleep on This: Study Links Sleep Apnea to Smaller Brain Volume — A recent study has found a |
A new study published in Neurology has found a correlation between severe sleep apnea and lower brain volumes in the medial temporal lobe area, including the hippocampus, in people with amyloid plaques, an early sign of Alzheimer’s disease. This correlation, which could suggest brain cell loss, was not seen in those without plaques. The study, however, doesn’t establish causality between sleep apnea and lower brain volume.
Studies have shown that sleep apnea is related to an increased risk of dementia. A new study looks at the relationship between sleep apnea and brain volume. The study is published in the May 31, 2023, online issue ofThe study compared people who have amyloid plaques in the brain that are an early sign of Alzheimer’s disease but do not have any memory problems to people with no amyloid plaques.
In people with amyloid plaques, having more severe sleep apneas was associated with having lower brain volume in the medial temporal lobe area of the brain which may suggest loss of brain cells. This connection was not found in people who did not have amyloid plaques. In the whole group, lower volumes in the hippocampus at the beginning of the study were associated with lower scores on a test of episodic memory at the end of the study.
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