India, April 26 -- Quality sleep is one of the prerequisites for good health. According to Dr Sudhir Kumar, MD, DM, a neurologist at Apollo Hospitals in Hyderabad, the quality of sleep is a marker for possible brain health one or two decades down the line.

Taking to X on April 25, Dr Kumar stated, "Your sleep pattern today predicts your brain health 10-20 years later. Not just how long you sleep, but how consistently and how deeply, matters for Alzheimer's risk."

He went on to list six sleep markers that have been linked to Alzheimer's risk at old age.

Sleep duration presents a U-shaped risk, shared Dr Kumar, noting that both short (less than six hours) and long (more than nine hours) sleep have been associated with higher Alzheimer's ...