What Happens If You Swallow Gum?

What happens if you swallow gum? Follow Stretch, one swallowed piece of gum, hour by hour through your body. The sugar and flavor in chewing gum dissolve in your saliva within minutes, but the gum base, made of synthetic polymers, can't be digested by any enzyme in your body. It slides down your esophagus in about four to eight seconds. In the stomach, acid and pepsin can't break swallowed gum down, and the pylorus only lets tiny bits through during a meal. So the gum waits until the stomach is empty, when a strong cleaning wave between meals (the migrating motor complex, nicknamed the housekeeper) sweeps it out. From there, your intestines move gum along the way they move fiber, and it leaves in your stool, usually within a few days. So does swallowed gum stay in your stomach for seven years? No. The seven year story is a myth. The rare exception: a lot of gum swallowed again and again, which in a few documented cases in young children built up into a blockage called a bezoar. Chapters 0:00 You swallowed gum. Does it really stay for seven years? 0:57 1 · The slide down: what gum is made of, and the gulp 2:43 2 · The acid pool: why acid and pepsin can't break gum 4:30 3 · The long tunnel: small intestine, like fiber 5:12 Checkpoint + the large intestine and the way out 6:07 4 · The seven year myth, and the rare times gum gets stuck 7:35 Quick quiz 8:05 The full answer + what's next This video is for education, not medical advice. If something you swallowed worries you, talk with a doctor. Sources: Scientific American, Fact or Fiction: Chewing Gum Takes Seven Years to Digest; Milov et al., Pediatrics 1998 (chewing gum bezoars, PMID 9685468); wireless motility capsule reference values, Digestive Diseases and Sciences 2025; OpenStax Anatomy and Physiology 2e (23.3 to 23.5); UCLA and American Chemical Society, 2025 pilot study on microplastics from chewing gum; US 21 CFR 172.615 (chewing gum base). Full list in the pinned comment. Sources for every fact: Scientific American, Fact or Fiction: Chewing Gum Takes Seven Years to Digest (scientificamerican.com/article/fact-or-fiction-chewing-gum-takes-seven-years-to-digest) · Milov et al., Chewing gum bezoars of the gastrointestinal tract, Pediatrics 1998 (pubmed.ncbi.nlm.nih.gov/9685468) · Wireless motility capsule reference values, Dig Dis Sci 2025 (pmc.ncbi.nlm.nih.gov/articles/PMC12185652) · OpenStax Anatomy and Physiology 2e, 23.3 to 23.5 · UCLA newsroom, chewing gum and microplastics, April 2025 (pilot study) · 21 CFR 172.615 chewing gum base · Migrating motor complex review (pmc.ncbi.nlm.nih.gov/articles/PMC5137267). Question for you: who told you the seven year story, and how old were you? Tell us below.