> I have a pet hypothesis that a non-trivial chunk of the "problems" discovered with medical testing are not actually problems but just expressions of the surprisingly wide variation in how humans work. Maybe this was just a thing that happened and not a condition that auto-resolved?

The reason this is a real condition is that it can cause extreme pain and nausea. Food sticking around in your body much longer than it should can cause it to begin fermenting, creating gas and other unhappy products, making you extremely uncomfortable and unhappy.

It is a rare side effect of GLP-1 meds as well, and happened to me, I’m pretty sure (the symptoms fit, and it subsided 3 months later when I lowered the dose).

To say it was debilitating would be the understatement of the year. I sat on the couch for 3 months, physically lacking the energy to do anything, and unable to intake the fuel (food) to fix that very problem due to pain and nausea. A miserable cycle.