When these spasms or involuntary contractions occur, they cause the vocal cords to close quickly, which produces that telltale hiccup sound. While hiccups are usually harmless and don't last long ...

"Nicotine hiccups" sound made up. But experts say they're a real phenomenon. Recent data on drug side effects found that nicotine was associated with the hiccups, according to a 2021 study looking ...