The glymphatic system enables the clearance of metabolic waste from the brain, and this process occurs primarily during deep sleep.

noli's read

The existence of the glymphatic system is well established in the scientific literature, notably through studies on rodents (e.g., Xie et al., Science) and confirmed by MRI observations in humans. Research indeed indicates that cerebrospinal fluid flow is significantly increased during sleep, facilitating the clearance of proteins such as beta-amyloid. While the link between sleep and cerebral cleansing is robust, it is important to note that human research is still in an exploratory phase regarding the precise quantification of this system's daily efficacy. The term "waste" is a useful simplification in the wellness context to designate normal cellular byproducts. This mechanism is considered a major biological function rather than a mere theory, although the direct transposition of mechanisms observed in animals to long-term human brain health remains the subject of active study.

the sources

1. 1Xie L, Kang H, Xu Q, et al. 2013