A comprehensive 2025 review of brain-imaging studies reveals that chewing gum produces measurable changes in brain activity related to attention, alertness, and stress regulation, though benefits appear short-lived. The research builds on a long historical association between gum chewing and mental wellbeing, dating back thousands of years.
Historical Use and Modern Research
Evidence of gum chewing extends back at least 8,000 years to Scandinavia, where individuals softened birchbark pitch for use as an adhesive in toolmaking. Ancient Greeks, Native American tribes, and the Maya civilization also engaged in chewing tree resins for both pleasure and reported soothing properties. In the late 19th and early 20th centuries, William Wrigley Jr. transformed gum into a mainstream commodity through marketing that promoted brands like Juicy Fruit and Spearmint as stress-relievers, hunger suppressants, and focus enhancers—a perception that persists today.
Brain Activity and Cognitive Effects
Researchers at the University of Szczecin in Poland conducted a comprehensive review analyzing over three decades of brain-imaging studies using MRI, EEG, and near-infrared spectroscopy. The findings revealed that chewing gum triggers notable alterations in brain activity within regions associated with movement, attention, and stress regulation. EEG studies specifically identified brief shifts in brain-wave patterns indicative of increased alertness and a state of “relaxed concentration.” Crystal Haskell-Ramsay, a professor of biological psychology at Northumbria University, noted that chewing gum appears beneficial for maintaining concentration during monotonous tasks.
Previous research suggests gum chewing can alleviate stress in specific contexts: individuals who chewed gum during mildly stressful tasks, such as public speaking or mental arithmetic, often exhibited lower anxiety levels compared to those who did not. However, the stress-reducing effects were not consistently observed in highly stressful scenarios, such as immediately before surgery, nor did it benefit participants encountering unsolvable problems designed to induce frustration.
Important Limitations
Despite promising findings, the research identifies significant limitations. The benefits of chewing gum—enhanced focus and stress reduction—are often short-lived, with attention-boosting effects tending to dissipate shortly after chewing ceased. Participants who chewed gum did not demonstrate improved memory recall compared to those who did not. Experts speculate that the act of chewing may simply satisfy the innate human desire to fidget. Researchers acknowledged that while chewing gum can modulate brain function, “the neural changes associated with chewing cannot be directly linked to the positive behavioral outcomes observed in studies.” Dentists warn that acids, sweeteners, and excessive chewing can potentially harm teeth, even with sugar-free gum.
This article is an AI-assisted summary. All facts and figures are drawn from the original report: https://us.headtopics.com/news/chewing-gum-s-brain-benefits-decades-of-research-uncover-78252452