Sleep is often overlooked — but growing evidence suggests that it plays a critical role in long-term brain health. According to a new 2025 study published in JAMA Neurology, poor sleep may significantly increase your risk of developing Alzheimer’s disease.
Sleep and Brain Waste Removal
During deep sleep, the brain activates the glymphatic system — a process that flushes out beta-amyloid and other waste proteins that accumulate during the day. When sleep is disrupted, these toxins can build up, leading to plaques associated with Alzheimer’s.
How Much Sleep Do You Really Need?
Most adults need 7–9 hours of quality sleep per night. But it’s not just quantity — sleep quality matters. Frequent awakenings or conditions like sleep apnea can prevent the deep, restorative sleep that protects cognitive function.
🧠 “Sleep is not just rest — it’s active brain maintenance,” says Dr. Susan Malone, lead author of the study.
Tips to Improve Your Sleep and Lower Alzheimer’s Risk
- Stick to a regular bedtime schedule
- Avoid screens and caffeine late in the day
- Keep your bedroom cool and dark
- Talk to your doctor about snoring or frequent waking
If you’re taking sleep aids or other medications, make sure to track them properly. Apps like Pill Plan can help you stay consistent and avoid missed or duplicate doses.
Related Reading
Check out our article on how stress affects medication adherence and consistency.
