All of the "surprising" stuff they do is because they reduce neuroinflammation. Imo. As far as I can tell from the literature.

I'm fairly sure that part of the reason they reduce neuroinflammation is because of pulmonary GLP-1 mechanisms. (Lung and brain are quite intimately connected, as is inflammation to the other two. As well as the gut. And… metabolism.)

Neuroinflammation is very behavior-modifying.

(Neuroinflammation kind of makes sense as an untamperable side-channel of information for neuronal processes – out of band; Protective. Can't think yourself to death.)

There's tons of papers to read. You wouldn't believe how much accurate and correct and actionable and predictive scientific information exists that nobody reads.

Read primary sources. Anyone can read. Don't let anyone tell you that you can't read. Least of all yourself.