If you’ve ever brushed off a short night of sleep as “no big deal,” it might be time to rethink that—especially after age 55. Growing research shows that consistently getting less than six hours of sleep isn’t just about feeling tired the next day. It may actually speed up memory problems and increase the risk of long-term cognitive decline. For older adults, where brain health becomes increasingly important, sleep is no longer optional—it’s essential. Understanding the link between sleep and memory decline could help protect your independence, finances, and quality of life.
