Waves of Walkers Wander without Waking

A large survey finds evidence that millions of Americans had at least one episode of sleepwalking in the last year. Katherine Harmon reports

Join Our Community of Science Lovers!

Sleepwalking can be pretty creepy, but a new study shows that it's not all that uncommon. A survey of more than 15,000 adults across 15 different states implies that millions of Americans have engaged in these nocturnal wanderings in the past year. 

Almost a third of those asked recalled sleepwalking at least once in their life. Most of these incidents had occurred during childhood, when sleepwalking is much more common.

Some 3.6 percent of respondents reported at least one incident in the past year, and 1 percent had two or more episodes a month.


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


Those more likely to be habitual sleepwalkers included people taking an SSRI antidepressant; heavy drinkers; or those with depression or OCD. The findings are in the journal Neurology. [M. M. Ohayon et al.,"Prevalence and Comorbidity of Nocturnal Wandering in the U.S. Adult General Population"]

Sleepwalking puts people at risk for minor injuries, falls and even auto accidents. According to the Mayo Clinic, adult sleepwalkers might indeed try to attack their wakers. So, the recommendation is to simply try to steer the somnambulator quietly back to bed. Sweet dreams.

—Katherine Harmon

[The above text is an exact transcript of this podcast.]

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe