Why Bookstores Trigger Sudden Bathroom Urges

Entering a bookstore can trigger a sudden, unexplained urge to use the restroom. Known as the Mariko Aoki phenomenon, this oddity has baffled researchers for decades despite being widely reported in Japan.

The term emerged in the 1980s after a reader wrote into a magazine about her strange experience. While scientists have proposed various theories involving the smell of old paper or psychological associations with reading, no definitive cause has been proven. Many people report feeling the same sensation, turning what started as an anecdotal observation into a recognized urban mystery. It remains a fascinating example of how our environment can unexpectedly affect our bodily functions.