A mismatch between "perceived" hunger and homeostatic appetite.

An interesting aside in this idea is a study on children with a gut problem of some type. They used glucose monitors to check the kid's blood glucose when they said they were hungry. The idea is that in healthy children, there's a dip in blood glucose when they experience hunger.

So if the kid's blood glucose was below a certain level, and they were hungry, they ate. Hunger without a dip in blood glucose, and they put it off for an hour. Supposedly eating this way helped them with their gut issue.

Another interesting thing--their reports of hunger started to coincide with that dip in blood glucose, more and more.

They also tried this in overweight adults. Same thing--they even reported that they learned to fairly reliably predict their own blood glucose measurement by how they felt. They don't seem to have taken over the weight loss world, but I always found the idea interesting. Can the body "learn" that it will only get fed if it lets blood glucose dip? Or learn to only associate feeding opportunities with that dip in blood glucose--discounting food cues etc. to some degree unless that condition is met?