Gut Signals Boost Memory via Vagus Nerve, Study Finds

Scientists studied rats to see how the food they eat affects their memory.

They found that when rats ate healthy food, a chemical called acetylcholine was released in a part of the brain that helps remember.

This release was helped by signals from the vagus nerve, which connects the gut to the brain.

If the vagus nerve was blocked, the rats had less acetylcholine and had trouble remembering where food was.

Eating a lot of sugary or fatty food made the rats remember better at first, but later it hurt their memory.

Even after switching to healthy food, the rats still had weaker memory.

The researchers think that stimulating the vagus nerve might help people with memory problems, like in Alzheimer’s disease.