trustme.bro/r/…
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the claim
Food swallowed while upside down reaches the stomach via peristalsis
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

The statement that swallowed food reaches the stomach via peristalsis regardless of body position (such as being upside down) is a matter of everyday physiological understanding and common knowledge, so no citation is strictly needed.

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The analysis

The retrieved papers discuss esophageal motility disorders, swallowing exercises, and body positions like the bridge position, but do not directly test or address the specific textbook physiological fact about swallowing while upside down. Because the claim represents a well-established physiological mechanism known to the public and basic biology, it is classified as common knowledge while noting that the specific retrieved sources do not bear directly on it.

Everything we examined (12)
We also searched for evidence AGAINST this claim, not only for it.
  1. Recognition of extracellular DNA by type IV pili promotes biofilm formation by Clostridioides difficile.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Why so Many Patients With Dysphagia Have Normal Esophageal Function Testing.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Effect of Bridge Position Swallow on Esophageal Motility in Healthy Individuals Using High-Resolution Manometry.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Wireless Peristaltic Pump for Transporting Viscous Fluids and Solid Cargos in Confined Spaces.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. A single rare σ70 variant establishes a unique gene expression pattern in the E. coli pathobiont LF82.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. Pathophysiology of Gastroesophageal Reflux Disease.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. Oesophageal fluoroscopy in adults-when and why?peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Microalgae-based Intestinal villi-targeting multistage biosystem for irritable bowel syndrome treatment.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. SNHG5 enhances colorectal cancer metastasis through RNA-protein interaction with GNB2 and activation of canonical Wnt signaling.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Effect of carbonated water on esophageal high-resolution manometry metrics: a retrospective study.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. Efficacy of the Bridge Dry Swallowing Exercise for Refractory Gastroesophageal Reflux Disease.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Modern treatment for achalasia: endoscopic and surgical therapies.peer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked06 Aug 2026
judged → COMMON KNOWLEDGE · 006 Aug 2026
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