If you’re human, you’ve probably hollered a curse word or two (or three) when barking your shin on a table edge or hitting your thumb with a hammer. Perhaps you’ve noticed that this seems to lessen your pain. There’s a growing body of scientific evidence that this is indeed the case. The technical term is the “hypoalgesic effect of swearing.” Cursing can also improve physical strength and endurance, according to a new paper published in the journal American Psychologist.
As previously reported, co-author Richard Stephens, a psychologist at Keele, became interested in studying the potential benefits of profanity after noting his wife’s “unsavory language” while giving birth and wondered if profanity really could help alleviate pain. “Swearing is such a common response to pain. There has to be an underlying reason why we do it,” Stephens told Scientific American after publishing a 2009 study that was awarded the 2010 Ig Nobel Peace Prize.
For that study, Stephens and his colleagues asked 67 study participants (college students) to immerse their hands in a bucket of ice water. They were then instructed to either swear repeatedly using the profanity of their choice or chant a neutral word. Lo and behold, the participants said they experienced less pain when they swore and were also able to leave their hands in the bucket about 40 seconds longer than when they weren’t swearing. It has been suggested that this is a primitive reflex that serves as a form of catharsis.
The team followed up with a 2011 study showing that the pain-relief effect works best for subjects who typically don’t swear that often, perhaps because they attach a higher emotional value to swears. They also found that subjects’ heart rates increased when they swore. But it might not be the only underlying mechanism. Other researchers have pointed out that profanity might be distracting, thereby taking one’s mind off the pain rather than serving as an actual analgesic.
So in 2020, the Stephens team conducted a follow-up study, using the same methodology as they had back in 2009, asking participants to either chant the F-word or the fake swears “fouch” and “twizpipe.” (Fun fact: the earliest known appearance of the F-word in the English language is “Roger F$#%-by-the-Navel” who appears in some court records from 1310-11. )
The result: Only the F-word had any effect on pain outcomes. The team also measured the subjects’ pain threshold, asking them to indicate when the ice water began to feel painful. Those who chanted the F-word waited longer before indicating they felt pain—in other words, the swearing increased their threshold for pain. Chanting “fouch” or “twizpipe” had no effect on either measure.
F@%*-ing go for it
For this latest study, Stephens was interested in investigating potential mechanisms for swearing as a possible form of disinhibition (usually viewed negatively), building on his team’s 2018 and 2022 papers showing that swearing can improve strength in a chair push-up task. “In many situations, people hold themselves back—consciously or unconsciously—from using their full strength,” said Stephens. “By swearing, we throw off social constraint and allow ourselves to push harder in different situations. Swearing is an easily available way to help yourself feel focused, confident and less distracted, and ‘go for it’ a little more.”
In two separate experiments, participants were asked to select a swear word they’d normally use after, say, bumping their head, and a more neutral word to describe an inanimate object like a table. They then performed the aforementioned chair push-up task: sitting on a sturdy chair and placing their hands under their thighs with the fingers pointed inwards. Then they lifted their feet off the floor and straightened their arms to support their body weight for as long as possible, chanting either the swear word or the neutral word every two seconds. Afterward, subjects competed a questionnaire to assess various aspects of their mental state during the task.
The results: Subjects who swore during the task could support their body weight much longer than those who merely repeated the neutral word. This confirms the reported results of similar studies in the past. Furthermore, subjects reported increases in their sense of psychological “flow,” distraction, and self-confidence, all indicators of increased disinhibition.
“These findings help explain why swearing is so commonplace,” said Stephens. “Swearing is literally a calorie-neutral, drug-free, low-cost, readily available tool at our disposal for when we need a boost in performance.” The team next plans to explore the influence of swearing on public speaking and romantic behaviors, since these are situations where most people are more hesitant and less confident in themselves, and hence more likely to hold back.
DOI: American Psychologist, 2025. 10.1037/amp0001650 (About DOIs).
A selection of videos from the now-defunct Screen Culture channel.
Credit:
Ryan Whitwam

Credit:
Prime Video