Milk intake (especially skim milk) causes acne in teenagers.
Original statement
وحب الشباب لدى المراهقين، وزيادة خطر باركنسون مع الحليب منزوع الدسم، كلها تنسجم مع المنظومة نفسها
not verbatim – paraphrase. Translation by the project; the Arabic wording is authoritative.
Translation
Milk intake (especially skim milk) causes acne in teenagers.
Origin
- Source status
- Archive editors
- Attribution
- Archive editors (eltayebat.com, rule 'dairy')
- Origin
- https://eltayebat.com/rule/dairy/
- Attribution uncertainty
- Editorial narrative and study selection by the archive operators, not shown to be Elawady's own words; the archive homepage says the forbidden section is documented 'independently of Dr. Diaa's words'.
- Claimed mechanism
Hormones and bioactive molecules in milk; IGF-1/insulin signalling.
- Claimed health effect
Acne.
- Population concerned
Adolescents and young adults.
- Geographic restriction by Elawady
none found
Scientific assessment
Potentially true – Some evidence points in favour of the statement, but it is not sufficient for a clear judgement.
Certainty of evidence: low – Further research is likely to change the assessment considerably.
1. What was claimed?
Milk leads to acne.
2. What is demonstrably correct?
A-DRY-07/08/09 found prevalence ratios of about 1.16-1.44 for high vs low milk intake; meta-analyses confirm associations (I-DRY-08: total milk OR 1.48; I-DRY-09: any milk OR 1.28).
3. What is wrong or exaggerated?
'Causes' is not established: data are observational, A-DRY-07 used recall of high-school diet decades later, and I-DRY-09 found publication bias and attenuated adjusted results. Acne is not a dangerous disease; the finding does not justify total dairy avoidance. A-DRY-07 also found cream cheese positively associated with acne, and I-DRY-09 found cheese (OR 1.22, borderline) and yogurt (OR 1.36) associated, whereas I-DRY-08 found no association for yogurt/cheese - so the evidence does not support a split between forbidden yogurt and allowed cheese.
4. What remains unclear?
Causality and dose; role of skim vs whole milk.
5. Which studies support it?
A-DRY-07, A-DRY-08, A-DRY-09, I-DRY-08, I-DRY-09.
6. Which studies contradict it?
No RCT evidence either way; limitations as listed.
7. What applies to Germany and Europe?
Dermatology guidelines generally regard diet as a possible but unproven factor (not separately verified).
8. What is known about Egypt?
No data.
9. What practical conclusion is appropriate?
Reducing milk may be a reasonable individual trial for acne-prone teenagers; it is not evidence that dairy is generally harmful.
Assessment details
- Rationale for certainty of evidence
Several observational studies and two meta-analyses show consistent associations for milk; no RCTs; self-reported acne and diet; publication bias and heterogeneity reported.
- Source quality
Archive editorial; figures correctly reported from A-DRY-07.
- Regional transferability
US/European/Asian observational data; plausible everywhere.
- Individual exceptions
Individuals with acne may test whether reducing milk helps.
- 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: Does milk intake (especially skim milk) cause acne in adolescents?
Research question in detail (PECO)
- Population
- Adolescents
- Intervention or exposure
- Milk intake
- Comparison
- Low intake
- Geographic scope
- universal biology
- Outcomes
- Acne prevalence/severity
Study results as reported by the authors. Our assessment follows below.
What speaks for the claim?
Meta-analysis: milk linked to acne, yogurt and cheese not
Aghasi M et al.. Clin Nutr 2019 · PMID 29778512 · DOI 10.1016/j.clnu.2018.04.015 Meta-analysisabstract checkedMeta-analysis of observational studies: total milk associated with acne.
- Actual result
- OR 1.48 (existing).
- Methodological quality
- low (observational)
- Relevance
- direct
- Limitations
- Self-report.
78,529 young people: dairy of all kinds linked to acne
Juhl CR et al.. Nutrients 2018 · PMID 30096883 · DOI 10.3390/nu10081049 Meta-analysisabstract checkedMeta-analysis of 78,529 participants: any milk associated with acne.
- Actual result
- OR 1.28 (existing).
- Methodological quality
- low
- Relevance
- direct
- Limitations
- Publication bias.
What speaks against the claim?
No high-quality evidence against the claim was found.
What does the overall evidence say?
Editorial assessment based on the studies above – not itself a study result.
Which position is better supported?
Consistent observational association; causation unproven.
Why some studies weigh more
No RCTs; meta-analyses of observational studies.
Is a causal relationship established? Possible, not established Plausible (insulin/IGF-1 signalling) but untested in trials.
Remaining uncertainty
Causality; dose.
Justified conclusion
A reasonable individual trial of reducing milk for acne-prone teenagers; no basis for wider dairy restrictions.
Does this depend on the country?
- General biological effects
- Transferable.
A regional difference that changes the conclusion is not supported by robust data.
Certainty of the overall evidence (GRADE, simplified)
- Main outcome
- Acne with milk intake
- Starting level
- low (observational studies)
- Reasons for downgrading
- risk of bias (self-report)
- publication bias
- 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.
Search strategy
Documented literature searches for this review (search strings in the original database syntax).
| Database | Date | Search | Looking for | Hits | Included |
|---|---|---|---|---|---|
| PubMed | 26 October 2026 | (dairy[tiab] OR milk[tiab]) AND acne[tiab] AND (randomized controlled trial[pt] OR meta-analysis[pt]) AND 2019:2026[dp] | both directions | 1 | |
| Europe PMC | 26 October 2026 | (acne) AND (milk OR dairy) AND (PUB_TYPE:"Meta-Analysis" OR PUB_TYPE:"Randomized Controlled Trial" OR "Mendelian randomization") AND PUB_YEAR:[2019 TO 2026] | both directions | 164 | |
| PubMed | 26 October 2026 | (acne[ti]) AND (guideline*[ti] OR "guidelines of care"[ti]) AND 2023:2026[dp] | guidelines | 20 |
Open questions
Randomised dietary trials in acne.
How deeply was this checked?
5 linked studies: 0 checked in full text (0 of them with a structured risk-of-bias assessment), 5 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 true (low)
- 26 October 2026 · Phase 4 (systematic evidence review) · Re-examined with extended evidence; verdict unchanged: Potentially true (low)
No new relevant evidence beyond the linked studies (no RCTs, no new meta-analyses or guideline statements found).
In plain language
Studies of thousands of teenagers found that those who drank more milk reported acne somewhat more often. This is a fairly consistent finding, but it comes from questionnaires, not experiments, so it does not prove that milk causes acne. The studies do not clearly separate yogurt, which the system forbids, from cheese, which it allows. Teenagers with acne can try cutting down on milk, but this says little about dairy and serious disease.
Studies on this claim
Studies supporting the claim (5)
-
Nurses recalling high-school diet: milk linked to teenage acne
Adebamowo CA et al.. J Am Acad Dermatol 2005 · PMID 15692464 · DOI 10.1016/j.jaad.2004.08.007Cross-sectional studycited by the Tayebat archiveabstract checked★ key studyTotal milk PR 1.22 (1.03-1.44)
Does the study support the specific claim? Partly · 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?
Milk and acne.
- How was the study done?
Retrospective analysis within a cohort (cross-sectional/recall design).
- How many people, animals or samples were studied?
47,355 women
- What was actually found?
More acne with more milk.
- How large was the observed effect?
Total milk PR 1.22 (1.03-1.44)
- What do the results mean in everyday life?
Small association with a minor condition.
- What are the study's limitations?
Self-report; observational.
- What does it say about Elawady's specific claim?
Supports an association.
- Do the results apply to Germany and Europe?
Moderate.
- What can explicitly not be concluded from this study?
Causation.
-
US girls: more milk, slightly more acne
Adebamowo CA et al.. Dermatol Online J 2006 · PMID 17083856Cohort studycited by the Tayebat archiveabstract checkedHighest (>=2 servings/day) vs lowest (<1/week): total milk PR 1.20 (1.09-1.31), whole 1.19 (1.06-1.32), low-fat 1.17 (1.04-1.31), skim 1.19 (1.08-1.31).
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?
Milk and acne.
- How was the study done?
Prospective cohort with prevalence ratios.
- How many people, animals or samples were studied?
6,094 girls aged 9-15
- What was actually found?
More acne with more milk.
- How large was the observed effect?
Highest (>=2 servings/day) vs lowest (<1/week): total milk PR 1.20 (1.09-1.31), whole 1.19 (1.06-1.32), low-fat 1.17 (1.04-1.31), skim 1.19 (1.08-1.31).
- What do the results mean in everyday life?
Small association with a minor condition.
- What are the study's limitations?
Self-report; observational.
- What does it say about Elawady's specific claim?
Supports an association.
- Do the results apply to Germany and Europe?
Moderate.
- What can explicitly not be concluded from this study?
Causation.
-
US boys: skim milk linked to acne
Adebamowo CA et al.. J Am Acad Dermatol 2008 · PMID 18194824 · DOI 10.1016/j.jaad.2007.08.049Cohort studycited by the Tayebat archiveabstract checkedHighest (>2 servings/day) vs lowest (<1/wk): total milk PR 1.16 (1.01-1.34), whole/2% 1.10 (0.94-1.28), low-fat 1.17 (0.99-1.39), skim 1.19 (1.01-1.40).
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?
Milk and acne.
- How was the study done?
Prospective cohort with prevalence ratios.
- How many people, animals or samples were studied?
4,273 boys
- What was actually found?
More acne with more milk.
- How large was the observed effect?
Highest (>2 servings/day) vs lowest (<1/wk): total milk PR 1.16 (1.01-1.34), whole/2% 1.10 (0.94-1.28), low-fat 1.17 (0.99-1.39), skim 1.19 (1.01-1.40).
- What do the results mean in everyday life?
Small association with a minor condition.
- What are the study's limitations?
Self-report; observational.
- What does it say about Elawady's specific claim?
Supports an association.
- Do the results apply to Germany and Europe?
Moderate.
- What can explicitly not be concluded from this study?
Causation.
-
Meta-analysis: milk linked to acne, yogurt and cheese not
Aghasi M et al.. Clin Nutr 2019 · PMID 29778512 · DOI 10.1016/j.clnu.2018.04.015Meta-analysisindependent cross-checkabstract checkedTotal milk OR 1.48.
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?
Dairy and acne.
- How was the study done?
Meta-analysis.
- How many people, animals or samples were studied?
Observational studies.
- What was actually found?
Milk associated with acne.
- How large was the observed effect?
OR 1.48 (1.31-1.66).
- What do the results mean in everyday life?
Possible link.
- What are the study's limitations?
Observational.
- What does it say about Elawady's specific claim?
Supports association.
- Do the results apply to Germany and Europe?
Moderate.
- What can explicitly not be concluded from this study?
Causation.
-
78,529 young people: dairy of all kinds linked to acne
Juhl CR et al.. Nutrients 2018 · PMID 30096883 · DOI 10.3390/nu10081049Meta-analysisindependent cross-checkabstract checkedAny dairy OR 1.25; cheese 1.22; yogurt 1.36.
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?
Dairy and acne.
- How was the study done?
Meta-analysis.
- How many people, animals or samples were studied?
78,529 young people.
- What was actually found?
All dairy types associated.
- How large was the observed effect?
OR 1.25 (1.15-1.36).
- What do the results mean in everyday life?
Possible link; cheese included.
- What are the study's limitations?
Publication bias.
- What does it say about Elawady's specific claim?
Supports association; no milk-vs-cheese split.
- Do the results apply to Germany and Europe?
Moderate.
- What can explicitly not be concluded from this study?
Causation.
No study in this group is marked as key.
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
Dermatology guidelines generally regard diet as a possible but unproven factor (not separately verified).
Egypt
No data.
What applies in my country?
General scientific assessment
Potentially true Milk intake is consistently associated with acne in observational studies, but causation is unproven and the data do not support the system's milk-versus-cheese split.
The following areas of food safety are relevant to this statement:
- Veterinary medicines and antibiotics
- Hormonal growth promoters
- Contaminants (heavy metals, PFAS, PCBs, dioxins, nitrate)
- Mycotoxins (mould toxins)
- Controls, imports, recalls, labelling
Dairy
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
- High school dietary dairy intake and teenage acne.. Adebamowo CA et al.. J Am Acad Dermatol 2005 · PMID 15692464 · DOI 10.1016/j.jaad.2004.08.007
- Milk consumption and acne in adolescent girls.. Adebamowo CA et al.. Dermatol Online J 2006 · PMID 17083856
- Milk consumption and acne in teenaged boys.. Adebamowo CA et al.. J Am Acad Dermatol 2008 · PMID 18194824 · DOI 10.1016/j.jaad.2007.08.049
- Dairy intake and acne development: A meta-analysis of observational studies.. Aghasi M et al.. Clin Nutr 2019 · PMID 29778512 · DOI 10.1016/j.clnu.2018.04.015
- Dairy Intake and Acne Vulgaris: A Systematic Review and Meta-Analysis of 78,529 Children, Adolescents, and Young Adults.. Juhl CR et al.. Nutrients 2018 · PMID 30096883 · DOI 10.3390/nu10081049