When it comes to studying cocaine addiction, one group of researchers has stomach acid on their brains.

In a paper published Thursday in PLOS Biology, researchers find that a surgery that diverts some bile acid into the bloodstream seems to cut back cravings among mice with a cocaine habit.

It’s a nifty angle on a pernicious problem, but it’s also another piece of evidence that bile acid, a compound produced by our digestive systems to help break down fats, also plays an important, tho