Boosting brain’s waste removal system improves memory in old mice | Researchers found that rejuvenating the lymphatic vessels in the brain enhanced recognition memory and restored synaptic function through an interleukin-6 (IL-6) pathway.

[u/Potential_Being_7226]

https://medicine.washu.edu/news/boosting-brains-waste-removal-system-improves-memory-in-old-mice/

[u/Potential_Being_7226]

The lymphatic system is not the same as the circulatory system, although it has some similarities in that the vessels are present throughout the body and lymph fluid circulates. Physical movement promotes movement of lymph in part through pressure on vessels. Although we don’t have a pump mechanism like the heart for the lymphatic system, there is probably a positive effect of increased blood flow on the movement of lymph (although exercise science is not my area of expertise). 

https://pubmed.ncbi.nlm.nih.gov/15974632/

There’s some evidence that during sleep, the lymphatic vessels are able to become less circuitous, which makes the resistance lower and allows lymph fluid to flow more easily:

During natural sleep, levels of norepinephrine decline, leading to an expansion of the brain’s extracellular space, which results in decreased resistance to fluid flow. This is reflected by improved cerebrospinal fluid (CSF) infiltration along the perivascular spaces, and therefore increased interstitial solute clearance [2]

https://pmc.ncbi.nlm.nih.gov/articles/PMC7698404/

[u/Truestorydreams → u/Potential_Being_7226]

I have to break the articles down and give more reads to grasp because its seems like this study opens up to alzihmers.

[u/Objective_Law5013 → u/Truestorydreams]

You would be correct, doctors in Shanghai, China are already trialing an experimental procedure that connects your lymphatic system to venous drainage and it seems to help people with Alzheimer's.

https://gpsych.bmj.com/content/37/3/e101641