A recent study published in Neurology reveals that disrupted sleep in one’s 30s and 40s is linked to memory and cognitive difficulties later in life. The study involved 526 participants who wore a wrist activity monitor to track sleep duration and quality. Results showed that the quality, not the quantity, of sleep is crucial for cognitive health in middle age. Participants also completed memory and thinking tests. The study highlights the importance of understanding the connection between sleep and cognition as a risk factor for diseases like Alzheimer’s.