Nezam El-Tayebat Fact CheckA scientific assessment of the “نظام الطيبات” nutrition system
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Mostly true Certainty of evidence: moderate provisional C-BAR-11

Sleeve gastrectomy causes gallstones (stones form faster after sleeve/rapid weight loss).

Conclusion: Correct: gallstones are a recognized consequence of sleeve and rapid weight loss.
  1. Original statement
  2. Scientific assessment
  3. In plain language
  4. Studies on this claim
  5. Regional context
  6. What applies in my country?
  7. References

Original statement

وانت تخين وخسيت بيجي لك حصوه وانت عامل تكميم بيجي لك الحصوه اسرع

verbatim according to source. Translation by the project; the Arabic wording is authoritative.

Translation

Sleeve gastrectomy causes gallstones (stones form faster after sleeve/rapid weight loss).

Origin

Source status
Video transcript (own words)
Attribution
Elawady (machine transcript)
Video
Dr.D Clinics - Diaa Al Awady is live!ايه هو ال HDL⧸ LDL⧸ Chylomicrons (Open source)
Published
5 April 2025
Timestamp
0:25:45 (location in the original video’s automatic YouTube caption track; confirms where the words occur, not who speaks)
Attribution uncertainty
Archive transcript (YouTube CC or AI-generated); wording may contain transcription errors; no timestamps available.
Claimed mechanism

Rapid weight loss after sleeve.

Claimed health effect

Gallstones.

Population concerned

Sleeve patients

Geographic restriction by Elawady

none found

Diverging source versions

Source status
Video transcript (own words)
Attribution
Elawady (machine transcript)
Video
اتفرجوا عالبودكاست ده وقولولي رأيكوا عشان انزلكوا الحلقه التانيه منه (Open source)
Published
9 April 2026
Timestamp
not available (transcript has no timings)
Attribution uncertainty
Archive transcript (YouTube CC or AI-generated); wording may contain transcription errors; no timestamps available.
Source status
Video transcript (own words)
Attribution
Elawady (machine transcript)
Video
الخوف حقيقه ام سراب. أضرار التكميم. بين الحقيقه والسراب (Open source)
Published
19 November 2025
Timestamp
not available (transcript has no timings)
Attribution uncertainty
Archive transcript (YouTube CC or AI-generated); wording may contain transcription errors; no timestamps available.

Scientific assessment

Mostly true – Correct at its core, but with limitations or minor inaccuracies.

Certainty of evidence: moderate – Further research may still affect the assessment.

1. What was claimed?

Gallstones after sleeve.

2. What is demonstrably correct?

Correct: gallstone formation after bariatric surgery, including sleeve, is a recognized complication; UDCA prophylaxis reduced gallstone formation (OR 0.25), symptomatic disease (OR 0.29) and cholecystectomy (OR 0.33) in RCTs including sleeve patients (I-BAR-12).

3. What is wrong or exaggerated?

'Always' (دايما) overstates it; many patients do not form stones.

4. What remains unclear?

Exact incidence after sleeve not extracted (not in abstract).

5. Which studies support it?

I-BAR-12.

6. Which studies contradict it?

None.

7. What applies to Germany and Europe?

Most key data are European (Sweden SOS/SOReg, Finland SLEEVEPASS, Switzerland SM-BOSS). European and international society guidelines consider bariatric surgery for severe obesity with lifelong follow-up.

8. What is known about Egypt?

No Egypt-specific outcome data were identified in this review. Elawady states in a transcript that sleeve gastrectomy is very widely performed in Egypt ('مصر كلها بتعملها'); the procedure-specific risks (reflux, deficiencies) apply wherever it is performed, and follow-up quality (supplements, endoscopy, mental-health screening) determines part of the risk.

9. What practical conclusion is appropriate?

Gallstone prevention is part of bariatric aftercare in many centres.

Assessment details

Rationale for certainty of evidence

Gallstone formation after bariatric surgery (including sleeve) is established enough that 11 RCTs tested and confirmed prevention with UDCA.

Source quality

Elawady's statement matches established surgical knowledge.

Regional transferability

Applicable.

Individual exceptions

Not every patient forms stones; UDCA prophylaxis reduces risk by about 75%.

Regional scope of the claim
general (biological/medical)
Last reviewed
25 October 2026 provisional

In plain language

Elawady said that gallstones form faster after sleeve gastrectomy. This is correct. Rapid weight loss after surgery makes gallstones more likely, and trials show that a bile-acid medicine can prevent many of them. Not every patient gets stones, however.

Studies on this claim

Studies supporting the claim (1)

  • Preventing gallstones after weight-loss surgery

    Mulliri A et al.. J Gastroenterol 2022 · PMID 35704084 · DOI 10.1007/s00535-022-01886-4
    Meta-analysisindependent cross-checkabstract only checked

    A bile-acid drug cut new gallstones by about 75% after surgery, including sleeve.

    Sleeve gastrectomy causes gallstones (stones form faster after sleeve/rapid weight loss).

    Does the study support the specific claim? Partly · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Gallstone prevention

    How was the study done?

    Meta-analysis of RCTs

    How many people, animals or samples were studied?

    3474

    What was actually found?

    UDCA effective

    How large was the observed effect?

    OR 0.25

    What do the results mean in everyday life?

    Gallstones after surgery are expected and preventable

    What are the study's limitations?

    Incidence not in abstract

    What does it say about Elawady's specific claim?

    Supports that sleeve can lead to gallstones

    Do the results apply to Germany and Europe?

    Applicable

    What can explicitly not be concluded from this study?

    Absolute risk

    Scientific details →

Studies contradicting or limiting the claim (0)

No studies in this group.

Studies with mixed or unclear results (0)

No studies in this group.

Regional context

Germany / EU

Most key data are European (Sweden SOS/SOReg, Finland SLEEVEPASS, Switzerland SM-BOSS). European and international society guidelines consider bariatric surgery for severe obesity with lifelong follow-up.

Egypt

No Egypt-specific outcome data were identified in this review. Elawady states in a transcript that sleeve gastrectomy is very widely performed in Egypt ('مصر كلها بتعملها'); the procedure-specific risks (reflux, deficiencies) apply wherever it is performed, and follow-up quality (supplements, endoscopy, mental-health screening) determines part of the risk.

What applies in my country?

General scientific assessment

Mostly true Correct: gallstones are a recognized consequence of sleeve and rapid weight loss.

This statement concerns biological or medical relationships. The scientific assessment above applies regardless of the country; country-specific food data do not change it.

References

  1. Ursodeoxycholic acid for the prevention of gallstones and subsequent cholecystectomy after bariatric surgery: a meta-analysis of randomized controlled trials.. Mulliri A et al.. J Gastroenterol 2022 · PMID 35704084 · DOI 10.1007/s00535-022-01886-4

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