There’s a lot I’m willing to give up for coffee: miles of counter space, a good night’s rest, any and all expendable income, teeth, my very identity itself. Luckily, a new study finds that at least of those concessions, sleep, I don’t have to worry too much about. Unfortunately, that same study discovered a potential new side effect to give you pause: caffeine makes your brain smaller.

This pair of findings don’t exactly seem to belong in the same study, but as Study Finds notes, there’s a link between the two. Caffeine’s supposed link to insomnia is well-worn territory. But beyond a general grogginess and a few bags under the eyes, sleep deprivation has been shown to have an impact of the amount of grey matter in your brain. Grey matter is the part of the brain that processes sensory information, not exactly an expendable part of your thinking space.

For their findings, researchers from the University of Basel in Switzerland examined 20 healthy, caffeine-consuming…



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