Poor Sleep Tied to Hardened Brain Arteries in Older Adults

Older people who sleep poorly may have a slightly increased risk of having hardened blood vessels in the brain, and oxygen-starved brain tissue, according to a new study. Both of these issues may contribute to a greater risk of stroke and cognitive impairment, the researchers said. "The forms of brain injury that we observed are important because they may not only contribute to the risk of stroke but also to chronic progressive cognitive and motor impairment," study author Dr. Andrew Lim, a neur