Sleep quality and its vital role in brain detoxification

Sleep plays a critical role in brain health through the activation of the glymphatic system. During sleep, brain cells shrink, allowing cerebrospinal fluid to circulate more efficiently and clear out toxic proteins and waste accumulated during the day. This nocturnal cleaning process is essential for maintaining long-term memory, cognitive function, and emotional stability by regulating neurotransmitters like serotonin and dopamine.

Several factors can disrupt sleep quality, particularly as people age. Clinical psychologist Janet Kennedy identifies technology use and stress as primary culprits. Constant stimulation from screens and the mental load of professional or personal responsibilities can prevent the brain from resting. Additionally, physical discomfort, such as overheating during the night, is a common obstacle to restful sleep.

To improve sleep hygiene, experts recommend creating a calm, clutter-free bedroom environment and leaving electronic devices in a separate room to minimize stimulation.