Soft drinks wreck digestion, trigger reflux and heartburn, disturb the stomach's acidity, and (Pepsi) are among the main causes of gastritis and ulcers.
Original statement
من اقوى اسباب ارتجاع المريق والحموضه المستمره ا المشروبات الغازيه من اكث اسباب اا التهاب جدار المعده والتقرحات هو البيبسي
verbatim according to source. Translation by the project; the Arabic wording is authoritative.
Translation
Soft drinks wreck digestion, trigger reflux and heartburn, disturb the stomach's acidity, and (Pepsi) are among the main causes of gastritis and ulcers.
Origin
- Source status
- Video transcript (own words)
- Attribution
- Elawady (machine transcript)
- Video
- الجن . آلام العمود الفقري . الحقيقه والسراب (Open source)
- Published
- 26 November 2025
- Timestamp
- 0:40:13 (location in the original video’s automatic YouTube caption track; confirms where the words occur, not who speaks)
- Attribution uncertainty
- Machine transcript; a TV report with other speakers is interleaved in this programme, so attribution of this sentence to Elawady is probable but not certain.
- Claimed mechanism
Carbonation and acidity disturb gastric acidity and enzymes.
- Claimed health effect
Reflux (GERD), indigestion, gastritis, ulcers.
- Population concerned
General population
- Geographic restriction by Elawady
none found
Diverging source versions
- Source status
- Archive quote (no location given)
- Attribution
- Elawady (archive paraphrase; source video not given)
- Origin
- https://eltayebat.com/rule/soda/
- Attribution uncertainty
- The archive attributes this text to Dr. Diaa in its 'د. ضياء يقول' box but gives no video reference.
Scientific assessment
Potentially false – The available evidence tends to speak against the statement, but is not conclusive.
Certainty of evidence: low – Further research is likely to change the assessment considerably.
1. What was claimed?
Sodas cause reflux, indigestion, gastritis and ulcers.
2. What is demonstrably correct?
Carbonated beverages briefly lower oesophageal pH and transiently reduce sphincter pressure (I-SOD-01). Large prospective cohorts link soft-drink intake with a modestly higher risk of reflux symptoms and GERD (I-SOD-108, I-SOD-109), and replacing soda with water was associated with lower risk; people with heartburn may therefore benefit from avoiding soft drinks.
3. What is wrong or exaggerated?
The associations with reflux are modest (about 7-29% higher risk at high intakes) and not proven to be causal; there is no direct evidence that carbonated beverages cause oesophageal damage or GERD complications (I-SOD-01). 'Wrecking digestion' and 'disturbing the stomach's acidity' are not supported; a small RCT in functional dyspepsia even found improvement with carbonated water (I-SOD-02). No evidence was found that soft drinks are a main cause of gastritis or ulcers; the established main causes are Helicobacter pylori infection and anti-inflammatory painkillers (I-SOD-110).
4. What remains unclear?
Effect in specific subgroups with GERD.
5. Which studies support it?
I-SOD-108, I-SOD-109 (modest associations with reflux symptoms/GERD); I-SOD-01 (transient physiological effects).
6. Which studies contradict it?
I-SOD-01 (no direct evidence of GERD causation or complications), I-SOD-02, I-SOD-110 and I-GUT-02 (ulcers mainly caused by H. pylori and NSAIDs).
7. What applies to Germany and Europe?
Clinical guidance on GERD focuses on individual triggers rather than universal bans.
8. What is known about Egypt?
No Egypt-specific data.
9. What practical conclusion is appropriate?
People with heartburn may benefit from replacing soft drinks with water; stomach pain or suspected ulcers need medical assessment, including testing for H. pylori, rather than only avoiding soda.
Assessment details
- Rationale for certainty of evidence
Two large prospective cohorts found modest associations between soft drinks and reflux: soda >6 servings/day HR 1.29 (1.05-1.58) for GER symptoms in 48,308 women (I-SOD-108), and >1 SSB/day HR 1.07, >1 ASB/day HR 1.12 for GERD in 167,574 UK adults (I-SOD-109). A systematic review found only transient physiological effects and no evidence that carbonated beverages cause oesophageal damage or GERD complications (I-SOD-01). No evidence links soft drinks to gastritis or peptic ulcers, whose main causes are H. pylori and NSAIDs (I-SOD-110, I-GUT-02).
- Source quality
Archive quote and transcript are consistent with each other; no study is cited by the archive for the reflux claim.
- Regional transferability
High.
- Individual exceptions
Individual GERD patients may notice symptom triggers; avoiding a personal trigger is reasonable.
- Regional scope of the claim
- general (biological/medical)
- Last reviewed
- 26 October 2026 provisional
Scientific evidence in detail
Overinterpreted – A real finding exists, but the claim draws more from it than the data allow (e.g. association taken as cause, animal data applied to humans, small effect presented as large).
Research question: Do soft drinks cause digestive damage, reflux and heartburn, disturb stomach acidity and act as main causes of gastritis and peptic ulcers?
Research question in detail (PECO)
- Population
- General population
- Intervention or exposure
- Soft drink consumption
- Comparison
- Low or no consumption
- Geographic scope
- universal biology; H. pylori prevalence differs by country
- Outcomes
- GER symptoms/GERD
- Gastritis
- Peptic ulcer
Study results as reported by the authors. Our assessment follows below.
What speaks for the claim?
Soda linked to more heartburn in women
Mehta RS et al.. Clin Gastroenterol Hepatol 2020 · PMID 31786327 · DOI 10.1016/j.cgh.2019.11.040 Cohort studyabstract checkednewly addedNurses' Health Study II: soda intake associated with incident GER symptoms; replacing soda with water associated with lower risk.
- Actual result
- Soda >6/day HR 1.29 (1.05-1.58); 2 servings soda->water HR 0.92 (0.89-0.96).
- Methodological quality
- high (large prospective cohort)
- Relevance
- direct for reflux symptoms
- Limitations
- Self-reported; women only.
Soft drinks slightly linked to reflux disease
Ma C et al.. Eur J Nutr 2025 · PMID 40498344 · DOI 10.1007/s00394-025-03707-9 Cohort studyabstract checkednewly addedUK Biobank: SSB and ASB >1/day associated with slightly higher incident GERD.
- Actual result
- SSB HR 1.07 (1.01-1.14); ASB 1.12 (1.05-1.21).
- Methodological quality
- high (large cohort)
- Relevance
- direct for GERD
- Limitations
- Small effects; observational.
What speaks against the claim?
Fizzy drinks and reflux: systematic review
Johnson T et al.. Aliment Pharmacol Ther 2010 · PMID 20055784 · DOI 10.1111/j.1365-2036.2010.04232.x Systematic reviewabstract checkedSystematic review: carbonated drinks briefly lower oesophageal pH and transiently reduce sphincter pressure, but there is no evidence that they cause oesophageal damage or GERD complications.
- Actual result
- No direct evidence of GERD causation or complications.
- Methodological quality
- moderate
- Relevance
- direct
- Limitations
- Pre-dates the cohorts.
Ulcers are mainly caused by H. pylori and painkillers
Lanas A, Chan FKL. Lancet 2017 · PMID 28242110 · DOI 10.1016/S0140-6736(16)32404-7 Narrative reviewabstract checkednewly addedLancet seminar: peptic ulcer disease is mainly associated with H. pylori infection and NSAIDs/antithrombotic drugs.
- Actual result
- Aetiology overview.
- Methodological quality
- moderate (authoritative review)
- Relevance
- direct for ulcer causes
- Limitations
- Does not test soft drinks.
Treating H. pylori prevents ulcers returning (Cochrane)
Ford AC et al.. Cochrane Database Syst Rev 2016 · PMID 27092708 · DOI 10.1002/14651858.CD003840.pub5 Meta-analysisabstract checkedCochrane review: H. pylori eradication prevents ulcer recurrence, demonstrating its causal role.
- Actual result
- Duodenal ulcer recurrence RR 0.20 (0.15-0.26).
- Methodological quality
- high
- Relevance
- indirect
- Limitations
- Certainty very low for some outcomes.
What does the overall evidence say?
Editorial assessment based on the studies above – not itself a study result.
Which position is better supported?
Soft drinks are modestly associated with reflux symptoms and GERD in large cohorts, so avoiding them is sensible for people with heartburn; but there is no evidence that they 'wreck digestion' or are main causes of gastritis or ulcers, which are mainly caused by H. pylori and NSAIDs.
Why some studies weigh more
Two large prospective cohorts carry most weight for reflux; established ulcer aetiology carries most weight for the ulcer part.
Is a causal relationship established? Possible, not established Association with reflux symptoms is consistent but modest; mechanism (acidity, carbonation, caffeine) unclear.
Remaining uncertainty
Mechanism; causality.
Justified conclusion
Partly true for reflux symptoms; false for ulcers.
Why do studies seem to disagree?
The 2010 systematic review (no direct evidence of causation) and the later cohorts (modest associations) answer different questions: physiological causation of GERD damage versus association with symptoms. They are compatible.
Does this depend on the country?
- General biological effects
- Universal.
- Actual monitoring data
- H. pylori prevalence is high in Egypt, which makes H. pylori testing more relevant than soda avoidance for ulcer symptoms (prevalence data not reviewed here).
A regional difference that changes the conclusion is not supported by robust data.
Statistical re-check
- CI symmetry and illustrative absolute excess – HR 1.29 symmetric; baseline 30.3/1000 person-years; ~9/1000 person-years excess at highest intake (approximation) recalculated
- Illustrative absolute excess – Cumulative GERD 6.2%; ~0.4 percentage points excess at HR 1.07 (approximation) recalculated
Certainty of the overall evidence (GRADE, simplified)
- Main outcome
- Reflux symptoms with soft drink intake
- Starting level
- low (observational studies)
- Reasons for downgrading
- inconsistency of mechanism
- Reasons for upgrading
- dose-response
- Result
- low
Simplified assessment by a single reviewer, following the GRADE approach; not a formal GRADE panel. GRADE rates the body of evidence for one outcome, not individual studies.
Clinical guidelines and official statements checked
- ACG: ACG Clinical Guideline for the Diagnosis and Management of GERD (2022; I-PPI-10) (2022) could not be retrieved; content not used
Search strategy
Documented literature searches for this review (search strings in the original database syntax).
| Database | Date | Search | Looking for | Hits | Included |
|---|---|---|---|---|---|
| Europe PMC | 26 October 2026 | ("carbonated beverages" OR "soft drinks" OR "carbonated soft drinks" OR soda) AND ("gastroesophageal reflux" OR "reflux symptoms" OR heartburn) AND (cohort OR prospective OR "meta-analysis") | both directions | 708 | |
| PubMed | 26 October 2026 | beverage intake[ti] AND gastroesophageal reflux[ti] | supporting evidence | 2 | |
| PubMed | 26 October 2026 | (carbonated[ti] OR soda[ti] OR soft drink*[ti]) AND (reflux[ti] OR heartburn[ti] OR GERD[ti]) | both directions | 5 | |
| Europe PMC | 26 October 2026 | ("carbonated beverages" OR "soft drinks" OR cola) AND ("peptic ulcer" OR "gastritis" OR "duodenal ulcer") AND (risk OR association) | supporting evidence | 738 | |
| PubMed | 26 October 2026 | Lanas A[au] AND Chan FKL[au] AND peptic ulcer disease[ti] AND Lancet[ta] | contradicting evidence | 1 |
Open questions
Which component (carbonation, acid, caffeine, sugar) drives the reflux association.
How deeply was this checked?
6 linked studies: 0 checked in full text (0 of them with a structured risk-of-bias assessment), 6 on the basis of the abstract, 0 bibliographically only. No formal assessment with two independent reviewers and no independent human expert review has taken place yet.
Last scientific review: 26 October 2026
History of the verdict
- 25 October 2026 · Phase 1 · Initial assessment: Potentially false (low)
- 26 October 2026 · Phase 4 (systematic evidence review) · Re-examined with extended evidence; verdict unchanged: Potentially false (low)
New cohorts show a modest reflux association, which corrects the previous wording ('not supported') for the reflux part; the ulcer and 'wrecking digestion' parts remain unsupported, so the overall verdict is unchanged.
New sources: I-SOD-108 I-SOD-109 I-SOD-110
In plain language
Large studies found that people who drink a lot of soft drinks develop heartburn and reflux somewhat more often, and that swapping soda for water was linked to fewer symptoms. Fizzy drinks can briefly make the food pipe more acidic and relax the valve at the top of the stomach. But there is no proof that they damage the food pipe, wreck digestion, or cause stomach ulcers; ulcers are mainly caused by the bacterium H. pylori and by certain painkillers.
Studies on this claim
Studies supporting the claim (2)
-
Soda linked to more heartburn in women
Mehta RS et al.. Clin Gastroenterol Hepatol 2020 · PMID 31786327 · DOI 10.1016/j.cgh.2019.11.040Cohort studyindependent cross-checkabstract checked★ key studyIn 48,000 US nurses, women drinking the most soda developed weekly heartburn or regurgitation about 29% more often; switching soda for water was linked to lower risk.
Soda associated with GER symptoms (HR 1.29 at >6/day).
Does the study support the specific claim? Partly · Methodological quality: high · Certainty of evidence: see overall assessment of the claim
Original publication · Scientific details
Study explained simply
- What did the researchers want to find out?
Examine which drinks predict new reflux symptoms.
- How was the study done?
Followed women for many years with food questionnaires.
- How many people, animals or samples were studied?
48,308 women; 7961 developed reflux symptoms.
- What was actually found?
Coffee, tea and soda were linked to more reflux symptoms; water, milk and juice were not.
- How large was the observed effect?
Soda HR 1.29 (1.05-1.58) at the highest intake.
- What do the results mean in everyday life?
People with heartburn may benefit from replacing soda with water.
- What are the study's limitations?
Observational; self-reported symptoms; women only.
- What does it say about Elawady's specific claim?
Supports the reflux part of the claim, not the ulcer part.
- Do the results apply to Germany and Europe?
Applicable.
- What can explicitly not be concluded from this study?
Cannot prove soda causes reflux disease or damage.
-
Soft drinks slightly linked to reflux disease
Ma C et al.. Eur J Nutr 2025 · PMID 40498344 · DOI 10.1007/s00394-025-03707-9Cohort studyindependent cross-checkabstract checkedAmong 167,574 UK adults, drinking more than one sugary or diet soft drink a day was linked to a 7-12% higher risk of reflux disease.
Small association of SSB and ASB with GERD.
Does the study support the specific claim? Partly · Methodological quality: high · Certainty of evidence: see overall assessment of the claim
Original publication · Scientific details
Study explained simply
- What did the researchers want to find out?
Study sweetened drinks and reflux disease.
- How was the study done?
UK Biobank cohort followed about 13 years.
- How many people, animals or samples were studied?
167,574 adults; 10,454 GERD cases.
- What was actually found?
Sugary and diet drinks linked to slightly more reflux disease.
- How large was the observed effect?
HR 1.07 (SSB), 1.12 (ASB).
- What do the results mean in everyday life?
A small increase in risk; individual triggers vary.
- What are the study's limitations?
Observational; small effects.
- What does it say about Elawady's specific claim?
Supports a modest reflux link, not 'wrecking digestion'.
- Do the results apply to Germany and Europe?
UK data.
- What can explicitly not be concluded from this study?
Cannot prove causation.
No study in this group is marked as key.
Studies contradicting or limiting the claim (4)
-
Fizzy drinks and reflux: systematic review
Johnson T et al.. Aliment Pharmacol Ther 2010 · PMID 20055784 · DOI 10.1111/j.1365-2036.2010.04232.xSystematic reviewindependent cross-checkabstract checked★ key studyFizzy drinks briefly lower acidity in the food pipe, but there is no direct evidence that they cause reflux disease.
Does the study support the specific claim? No · 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?
Do carbonated beverages affect oesophageal pH, motility, damage, GERD symptoms and complications?
- How was the study done?
Systematic review (qualitative).
- How many people, animals or samples were studied?
Not stated in abstract; Not stated in abstract
- What was actually found?
Very short decline in intra-oesophageal pH; possible transient reduction of LES basal pressure; no evidence of direct oesophageal damage; not consistently shown to cause GERD symptoms; no evidence of GERD complications or oesophageal cancer.
- How large was the observed effect?
Not pooled
- What do the results mean in everyday life?
Fizzy drinks are not a proven cause of reflux disease.
- What are the study's limitations?
Old (2010); Limited primary evidence; No meta-analysis
- What does it say about Elawady's specific claim?
- Do the results apply to Germany and Europe?
High.
- What can explicitly not be concluded from this study?
That nobody gets symptoms from them.
-
Sparkling water for indigestion
Cuomo R et al.. Eur J Gastroenterol Hepatol 2002 · PMID 12352219 · DOI 10.1097/00042737-200209000-00010Randomised controlled trialindependent cross-checkabstract checkedIn a small trial, sparkling water improved indigestion and constipation compared with tap water.
Does the study support the specific claim? No · Methodological quality: low · Certainty of evidence: see overall assessment of the claim
Original publication · Scientific details
Study explained simply
- What did the researchers want to find out?
Effect of carbonated water in functional dyspepsia and constipation.
- How was the study done?
Double-blind randomized trial, ~15 days.
- How many people, animals or samples were studied?
21 (10 carbonated, 11 tap water); Patients with dyspepsia and secondary constipation
- What was actually found?
Dyspepsia score 7.9 -> 5.4 with carbonated water (unchanged with tap water); constipation score 16.0 -> 12.1; satiety reduced; gallbladder emptying improved.
- How large was the observed effect?
Dyspepsia score 7.9 -> 5.4
- What do the results mean in everyday life?
Plain sparkling water is not shown to harm digestion.
- What are the study's limitations?
Very small; Short; Within-group analyses
- What does it say about Elawady's specific claim?
- Do the results apply to Germany and Europe?
High.
- What can explicitly not be concluded from this study?
General benefit.
-
Ulcers are mainly caused by H. pylori and painkillers
Lanas A, Chan FKL. Lancet 2017 · PMID 28242110 · DOI 10.1016/S0140-6736(16)32404-7Narrative reviewindependent cross-checkabstract checkedA Lancet review describes Helicobacter pylori infection and anti-inflammatory painkillers as the central causes of stomach and duodenal ulcers.
Main causes of ulcers are H. pylori and NSAIDs.
Does the study support the specific claim? No · 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?
Review causes and treatment of peptic ulcers.
- How was the study done?
Expert narrative review.
- How many people, animals or samples were studied?
Not applicable.
- What was actually found?
Ulcers are mainly linked to H. pylori and NSAIDs.
- How large was the observed effect?
Not applicable.
- What do the results mean in everyday life?
People with ulcer symptoms need testing for H. pylori and a review of painkiller use, not only a drink ban.
- What are the study's limitations?
Narrative review.
- What does it say about Elawady's specific claim?
Contradicts the claim that cola is a main cause of ulcers.
- Do the results apply to Germany and Europe?
Applicable.
- What can explicitly not be concluded from this study?
Does not test soft drinks directly.
-
Treating H. pylori prevents ulcers returning (Cochrane)
Ford AC et al.. Cochrane Database Syst Rev 2016 · PMID 27092708 · DOI 10.1002/14651858.CD003840.pub5Meta-analysisindependent cross-checkabstract checked★ key studyDuodenal ulcer recurrence fell from 64% without treatment to 13% with eradication.
Does the study support the specific claim? No · Methodological quality: high · Certainty of evidence: see overall assessment of the claim
Original publication · Scientific details
Study explained simply
- What did the researchers want to find out?
Ulcer treatment.
- How was the study done?
Cochrane review.
- How many people, animals or samples were studied?
Thousands.
- What was actually found?
Fewer recurrences.
- How large was the observed effect?
RR 0.20.
- What do the results mean in everyday life?
Eradication works.
- What are the study's limitations?
Older trials.
- What does it say about Elawady's specific claim?
Contradicts C-GUT-06.
- Do the results apply to Germany and Europe?
Applicable.
No study in this group is marked as key.
Studies with mixed or unclear results (0)
No studies in this group.
Regional context
Germany / EU
Clinical guidance on GERD focuses on individual triggers rather than universal bans.
Egypt
No Egypt-specific data.
What applies in my country?
General scientific assessment
Potentially false Soft drinks are modestly linked with reflux symptoms, but the claims that they wreck digestion or are a main cause of gastritis and ulcers are not supported.
The following areas of food safety are relevant to this statement:
- Additives and processing
Honey, sugar, sweets
Choose a country to see the checked information for it.
Limits: legal rules describe what is allowed, not what every single food contains. Measurement data come from samples and are meaningful only together with their method details.
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References
- Association Between Beverage Intake and Incidence of Gastroesophageal Reflux Symptoms.. Mehta RS et al.. Clin Gastroenterol Hepatol 2020 · PMID 31786327 · DOI 10.1016/j.cgh.2019.11.040
- Sweetened beverage intake and incident gastroesophageal reflux disease in a prospective cohort study.. Ma C et al.. Eur J Nutr 2025 · PMID 40498344 · DOI 10.1007/s00394-025-03707-9
- Systematic review: the effects of carbonated beverages on gastro-oesophageal reflux disease.. Johnson T et al.. Aliment Pharmacol Ther 2010 · PMID 20055784 · DOI 10.1111/j.1365-2036.2010.04232.x
- Effects of carbonated water on functional dyspepsia and constipation.. Cuomo R et al.. Eur J Gastroenterol Hepatol 2002 · PMID 12352219 · DOI 10.1097/00042737-200209000-00010
- Peptic ulcer disease.. Lanas A, Chan FKL. Lancet 2017 · PMID 28242110 · DOI 10.1016/S0140-6736(16)32404-7
- Eradication therapy for peptic ulcer disease in Helicobacter pylori-positive people.. Ford AC et al.. Cochrane Database Syst Rev 2016 · PMID 27092708 · DOI 10.1002/14651858.CD003840.pub5