Medicines.

In 2013, an influential study published in Science found that reading literary fiction (rather than popular fiction or literary nonfiction) improved participants’ results on tests that measured social perception and empathy, which are crucial to “theory of mind”: the ability to guess with accuracy what another human being might be thinking or feeling, a skill humans only start to develop around the age of four.

But not everybody agrees with this characterization of fiction reading as having the ability to make us behave better in real life. In her 2007 book, Empathy and the Novel, Suzanne Keen takes issue with this “empathy-altruism hypothesis,” and is skeptical about whether empathetic connections made while reading fiction really translate into altruistic, prosocial behavior in the world. She also points out how hard it is to really prove such a hypothesis. “Books can’t make change by themselves—and not everyone feels certain that they ought to,” Keen writes. “As any bookworm knows, readers can also seem antisocial and indolent. Novel reading is not a team sport.” Instead, she urges, we should enjoy what fiction does give us, which is a release from the moral obligation to feel something for invented characters—as you would for a real, live human being in pain or suffering—which paradoxically means readers sometimes “respond with greater empathy to an unreal situation and characters because of the protective fictionality.” And she wholeheartedly supports the personal health benefits of an immersive experience like reading, which “allows a refreshing escape from ordinary, everyday pressures.”

So even if you don’t agree that reading fiction makes us treat others better, it is a way of treating ourselves better. Reading has been shown to put our brains into a pleasurable trance-like state, similar to meditation, and it brings the same health benefits of deep relaxation and inner calm. Regular readers sleep better, have lower stress levels, higher self-esteem, and lower rates of depression than non-readers. “Fiction and poetry are doses, medicines,” the author Jeanette Winterson has written. “What they heal is the rupture reality makes on the imagination.”

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