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A new study has found that variability in night-to-night sleep time and reduced sleep quality adversely affect the ability of older adults to recall information about past events. The study also found unexpected racial differences in the type of sleep patterns tied to lower memory performance across both younger and older African American research participants.

A recent survey from the GW School of Medicine and Health Sciences found patients with psoriasis frequently use complementary or alternative therapies to treat their symptoms when traditional treatments fail.

New research may explain why an antioxidant that protects the brain is also associated with deterioration in areas susceptible to Alzheimer’s disease. The antioxidant, superoxide dismutase or SOD1, improves cognition, but a research team found SOD1’s protective benefits dramatically weaken when levels of tau proteins — a hallmark of Alzheimer’s disease — increase.