It would be really interesting if we find out that a simple 10 minute daily massage of the lymph nodes in the neck significantly prevents Alzheimer's.

.. and I think there are already evidence that it tends to affect people who had regular lymphatic inflammations throughout their life (on a less serious note: like yours truly's.. the neck/throat ones.. and I am already forgetting things and blanking out and I haven't even touched 40 :/).

Is this something I can do to myself? Is there some kind of video tutorial to see what I really need to do?

You absolutely can! Look up "lymphatic face drainage" on YouTube, there are lots of tutorials. You can do it with just your hands or a jade gua sha tool.

I wonder if anyone has ever done a study to see if there is a correlation between daily wet facial shaving with soap and Alzheimer's? A wet shave would be a short facial massage, whilst lathering the shaving soap.

Other than maybe helping with Alzheimer's as claimed above, is there any benefit to this?

Andrew Huberman did an episode in October on the lymphatic system. I learned a lot. Highly recommend.

Hmm, I had a bunch removed due to thyroid cancer. I wonder if that reduced my brains ability to clean itself out.

The thyroid is I think far enough away from the main cervical lymph nodes and also the olfactory lymphatic drainage pathways too that I don’t think you need to worry about thyroid removal affecting the lymphatic drainage there.

That being said your lymphatic drainage could still be affected by many other things. Eg do you have chronically inflamed sinuses? Difficulty breathing? These would be things pointing towards greater obstruction of the drainage pathways as it points to inflammation potentially impacting the flow of lymph out of the head/brain.

No, it spread to the cervical lymph nodes, many of which were removed.

Don't forget near infrared lasers for some photobiomodulation!

supposing you brought the light inside the body, either through the skin or some other way

also living on 600 calories a day of course

Heavy metal stops Alzheimer's! Yeah! \m/_(>_<)_\m/

Huh? What did you say? You'll have to speak up louder, though.

Makes me wonder if body posture promoting blood flow to the head (yoga or else) can be helpful here too.

I like hanging upside down which seems to get a lot of fluid flow to the brain. Using ankle hooks and an electric hoist or just hanging by the back of the knees over a bar.