Disturbed sleep was a significant and independent risk factor for subsequent development of dementia among U.S. military veterans, according to a large registry study reported this week.

With adjustments for education, history of traumatic brain injury, cardiovascular diseases, and other potential confounders, veterans 55 and older with any type of sleep disturbance were 30% more likely to be diagnosed with new-onset dementia during the following 8 years (hazard ratio 1.30, 95% CI 1.24-1.38), relative to those without sleep problems, according to Kristine Yaffe, MD, of the University of California San Francisco, and colleagues.

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