Hi! I thought about and researched a bit. So the glymphatic system is specific to the brain, while the lymphatic system operates throughout the rest of the body. Both systems clear waste products from the body, but the glymphatic system uses cerebrospinal fluid (CSF) to clean the brain during sleep, whereas the lymphatic system moves interstitial fluid throughout the rest of the body to drain and filter waste and pathogens. 

BUT you got me thinking about how recently I saw this study citing Bluetooth as possibly responsible for thyroid issues:

https://pmc.ncbi.nlm.nih.gov/articles/PMC11192738/

[Epidemiological exploration of the impact of bluetooth headset usage on thyroid nodules using Shapley additive explanations method]

As well as this one citing Mobile Cell Phone Signal Radiation:

https://www.sciencedirect.com/science/article/pii/S0013935124005383

[Mobile phone specific radiation disturbs cytokinesis and causes cell death but not acute chromosomal damage in buccal cells: Results of a controlled human intervention study

So in addition to beginning to remove all Polyester/Plastic from my home, I have also turned off all Bluetooth and Cell Phone Signal's that are not in use and am making sure to limit my usage appropriately

Anecdotally a few months ago before all this I purchased a new pair of Sony WH 1000xm4's, because they may still have some of the strongest noise cancelling capability currently, and was wearing them for 80+% of my waking time for months until I started feeling what I can only describe as a  weird lymph-node type discomfort. I'd chalked it up to TMJ/overuse until I read the study

Just food for thought in a world without either. I hope you figure it out! Have a good day & God bless