It has become clear that good quality sleep is very important for cognitive health and function. Sleep apnea can affect that, with research showing a 26% increase in the rate of cognitive impairment among people who have sleep apnea. But a new study shows that treating sleep apnea can improve memory in people with mild cognitive impairment —at least in the short term. More studies are needed to understand the long-term effect of sleep apnea treatment, but you can read more on that latest study here.