A Good Sleep Improves Brain Functioning

Sleeping pills might help you fall asleep, but they can interfere with your brain's natural rinsing process.

  • Sleep Cleans the Brain – When we sleep, our brain removes toxic waste using a process called the glymphatic system.
  • This cleaning process depends on a chemical called norepinephrine, which controls alertness.
  • Sleeping Pills Disrupt Cleaning – Sedatives reduce norepinephrine levels, making you sleepy but also slowing down brain cleansing.
  • Scientific Evidence – Studies on mice (which also apply to humans) show that poor glymphatic function leads to toxin buildup in the brain.
  • Avoid sleeping pills when possible and let your brain naturally clean itself for better long-term health.
1. Consider the following statements regarding the glymphatic system:
  1. It is responsible for removing metabolic waste from the brain during sleep.
  2. The process is regulated by the neurotransmitter norepinephrine.
  3. Sleeping pills enhance the glymphatic system's efficiency.
Which of the above statements is/are correct?
  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2, and 3
2. Which of the following statements about norepinephrine is correct?
  1. It is only a neurotransmitter and does not function as a hormone.
  2. It increases alertness and plays a role in the brain's waste-clearing process.
  3. It suppresses the glymphatic system’s activity, improving sleep quality.
  4. It is unrelated to sleep and cognitive functions.
3. With reference to the impact of sedatives on the brain, consider the following statements:
  1. Sedatives reduce norepinephrine levels, leading to decreased brain alertness.
  2. The suppression of norepinephrine enhances the natural cleansing of toxins in the brain.
  3. Long-term use of sleeping pills can interfere with the brain’s waste removal process.
Which of the statements given above is/are correct?
  1. 1 and 2 only
  2. 1 and 3 only
  3. 2 and 3 only
  4. 1, 2, and 3