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the claim

Eating human hair causes blockages in the digestive tract

the verdict
SUPPORTED
the evidence backs this
Recorded sources
9 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that eating human hair causes blockages in the digestive tract?

Yes. Eating human hair can lead to the accumulation of hair masses known as trichobezoars, which frequently cause blockages and obstructions in the digestive tract. Multiple clinical studies and case reports support this conclusion.

Verdict: SUPPORTED · 9 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently document that ingested human hair accumulates in the gastrointestinal tract to form trichobezoars, which cause various types of digestive tract obstructions (such as gastric outlet and small bowel obstructions). There is unanimous support in the literature with no papers refuting the claim.

Evidence for · 9
Treatment of large gastric trichobezoar in children: Two case reports and literature review
2023
Documents cases of gastric trichobezoars formed from swallowed human hair leading to obstruction.
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Kwon, H. & Park, J. (2023). Treatment of large gastric trichobezoar in children: Two case reports and literature review. doi.org. https://doi.org/10.1097/MD.0000000000033589

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More for · 8
Acute appendicitis with associated trichobezoar of feline hair
2022
Notes that trichobezoars typically consist of ingested human hair and cause obstruction and perforation.
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Redden, M. D. & Ghadiri, M. (2022). Acute appendicitis with associated trichobezoar of feline hair. doi.org. https://doi.org/10.1093/jscr/rjac133

Gastric bezoar: a simple and innovative lithotripsy method—a case report and review of the literature
2025
Lists human hair (trichobezoar) as a cause of gastric and mechanical intestinal obstruction.
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Yan, X. (2025). Gastric bezoar: a simple and innovative lithotripsy method—a case report and review of the literature. doi.org. https://doi.org/10.3389/fgstr.2025.1527031

Gastric trichobezoar as first presentation of psychiatric disorders in young women: case series
2024
Examines gastric trichobezoars—rare hair masses that cause abdominal symptoms and obstruction.
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Elnaim, A., Shareef, S. M., Ebrahim, M., Mohammed, M. M. R., Hussein, O., & Ali, S. S. H. M. (2024). Gastric trichobezoar as first presentation of psychiatric disorders in young women: case series. doi.org. https://doi.org/10.1007/s44337-024-00132-5

Trichobezoar in Paediatrics: An Uncommon Cause of Gastric Outlet Obstruction
2017
Identifies gastric trichobezoars made of human hair as a cause of partial gastric outlet obstruction.
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Albal, M. (2017). Trichobezoar in Paediatrics: An Uncommon Cause of Gastric Outlet Obstruction. doi.org. https://doi.org/10.17659/01.2017.0046

Chewing gum bezoar as an unexpected cause of acute intestinal obstruction
2020
Discusses trichobezoars as a well-known type of bezoar formed by swallowing hair in the gastrointestinal tract.
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Sinopidis, X., Zachos, K., Panagidis, A., Alexopoulos, V., Vareli, A., & Georgiou, G. (2020). Chewing gum bezoar as an unexpected cause of acute intestinal obstruction. doi.org. https://doi.org/10.1111/jpc.15326

Trichobezoar-induced intestinal obstruction-complete bowel obstruction in a young female with underlying psychiatric disorders: A case report
2025
Reports on trichobezoars composed of hair leading to complete bowel obstruction.
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Bhatta, B. R., Manandhar, K., Jha, R., Duwal, S., Shrestha, S., & Shrestha, A. (2025). Trichobezoar-induced intestinal obstruction-complete bowel obstruction in a young female with underlying psychiatric disorders: A case report. doi.org. https://doi.org/10.1016/j.ijscr.2025.111679

Rapunzel Syndrome Presenting as Acute Pancreatitis With Biliary Ductal Dilatation in a Child: A Rare Mechanical Etiology of Pediatric Pancreatitis.
2026
Describes trichobezoars (hair masses) extending into the intestine and causing bowel obstruction.
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RA, H., M, O., & Y, K. (2026). Rapunzel Syndrome Presenting as Acute Pancreatitis With Biliary Ductal Dilatation in a Child: A Rare Mechanical Etiology of Pediatric Pancreatitis.. doi.org. https://doi.org/10.7759/cureus.109379

Pediatric Small Bowel Obstruction From a Migratory Trichobezoar.
2026
Notes that intraluminal masses formed from ingested hair can cause small bowel obstruction.
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SR, P. & AI, Z. (2026). Pediatric Small Bowel Obstruction From a Migratory Trichobezoar.. doi.org. https://doi.org/10.7759/cureus.105118

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What does the evidence say?

The retrieved papers consistently document that ingested human hair accumulates in the gastrointestinal tract to form trichobezoars, which cause various types of digestive tract obstructions (such as gastric outlet and small bowel obstructions). There is unanimous support in the literature with no papers refuting the claim.

Receipt History
first checked06 Aug 2026
judged → SUPPORTED · 8206 Aug 2026
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