Mostly false Certainty of evidence: low provisional C-FAT-04

Olive oil (and flaxseed oil) should be avoided because it is adulterated ('it is all fake') and has a problem with its acidity; instead a little corn oil and sunflower oil should be used for frying.

Conclusion: There is no evidence that olive oil is harmful; corn and sunflower oil are acceptable alternatives, but avoiding olive oil is not supported.

Original statement

لا ولا زيت زيتون ولا زيت بذره الكتان ولا مش عارف ايه هو شويه زيت ذره هو كله مضروب يا بيه شويه زيت ذره شويه زيت ذره وشويه زيت عباد نحمر فيهم

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

Translation

Olive oil (and flaxseed oil) should be avoided because it is adulterated ('it is all fake') and has a problem with its acidity; instead a little corn oil and sunflower oil should be used for frying.

Origin

Source status
Video transcript (own words)
Attribution
Elawady (machine transcript)
Video
Dr Diaa Al Awady د ضياء العوضي is live! (Open source)
Published
18 February 2026
Timestamp
0:45:27 (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); no timestamps; wording may contain transcription errors; spoken live-stream language, context partly conversational.
Claimed mechanism

Adulteration/contamination of olive oil; 'acidity' problem (not specified).

Claimed health effect

Implied harm from olive oil.

Population concerned

Followers (advice given during Ramadan live stream).

Geographic restriction by Elawady

none found

Diverging source versions

قلت بلاش زيت الزيتون في مشكله بس وخلاص في مشكله في احمضته

Source status
Video transcript (own words)
Attribution
Elawady (machine transcript)
Video
Dr Diaa Al Awady د ضياء العوضي is live! (Open source)
Published
18 February 2026
Timestamp
0:52:03 (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); no timestamps; wording may contain transcription errors; spoken live-stream language, context partly conversational.

ما بحبش زيت الزيتون انا ما بحبش زيت الزيتون الصراحه يعني وحاسس ان هو مسموم مخلوط بحاجه

Source status
Video transcript (own words)
Attribution
Elawady (machine transcript)
Video
Dr Diaa Al Awady د ضياء العوضي is live! لايف الجمعه (Open source)
Published
19 December 2025
Timestamp
1:13:26 (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); no timestamps; wording may contain transcription errors; spoken live-stream language, context partly conversational.

الشيبس مسموح ضمن النظام. يُفضَّل الشيبس المقلي في زيت نباتي طبيعي وبدون نكهات مضافة كثيرة.

Source status
Third-party site (unofficial)
Attribution
Third-party site altayybat.com (unofficial)
Origin
https://altayybat.com/ar/
Attribution uncertainty
Unofficial fan/summary site; lowest attribution level; no video references given.

Scientific assessment

Mostly false – Essential parts of the statement are not supported by the evidence or are strongly exaggerated.

Certainty of evidence: low – Further research is likely to change the assessment considerably.

1. What was claimed?

Avoid olive oil; use corn or sunflower oil.

2. What is demonstrably correct?

Using corn or sunflower oil instead of animal fats is consistent with cohort evidence that higher linoleic acid intake is associated with lower CHD risk (RR 0.85 for CHD events, I-FAT-05) and with WHO's strong recommendation to replace saturated fat with polyunsaturated fat (I-FAT-08). Food fraud with olive oil is a real general concern (not quantified here).

3. What is wrong or exaggerated?

There is no evidence that authentic olive oil is harmful; free acidity is a quality grade criterion, not a health hazard at normal intakes (general food-quality knowledge; not separately sourced). Extra-virgin olive oil is part of the best RCT evidence for dietary cardiovascular prevention (I-FAT-04). The advice also contradicts the archive's own food list (olive oil allowed).

4. What remains unclear?

The RCT evidence for replacing saturated fat with linoleic-acid-rich oils is debated: the recovered Minnesota Coronary Experiment data showed no mortality benefit (I-FAT-06). Repeatedly heating frying oils produces oxidation products (not examined here).

5. Which studies support it?

I-FAT-05 (for corn/sunflower oils), I-FAT-08.

6. Which studies contradict it?

I-FAT-04 (olive oil benefit); I-FAT-06 (caution on linoleic-acid oils).

7. What applies to Germany and Europe?

Authentic olive oil is regulated by EU marketing standards (not fetched here).

8. What is known about Egypt?

Olive oil quality and adulteration in the Egyptian market were not assessed.

9. What practical conclusion is appropriate?

Buying olive oil from reliable sources is reasonable; avoiding olive oil for health reasons is not supported.

Assessment details

Rationale for certainty of evidence

No evidence was found that olive oil per se is harmful; RCT evidence favours it. Adulteration of olive oil is a known food-fraud issue in general, but we did not verify its extent in Egypt. The recommended alternatives (corn, sunflower oil, rich in linoleic acid) are associated with lower CHD in cohorts, with conflicting RCT re-analyses.

Source quality

Elawady's own words (machine transcript); contradicts the archive food list (C-FAT-03).

Regional transferability

Adulteration concerns are market-specific.

Individual exceptions

None.

Regional scope of the claim
depends on production conditions
Last reviewed
25 October 2026 provisional

In plain language

In one live video Dr. Elawady advised against olive oil, saying it is often fake and has an 'acid problem', and recommended a little corn or sunflower oil instead. This contradicts the archive's own food list, which allows olive oil. Good studies show that olive oil, as part of a Mediterranean diet, protects the heart. Corn and sunflower oils are also acceptable plant oils. Fake olive oil is a consumer-fraud problem, not a reason to consider real olive oil unhealthy.

Studies on this claim

Studies supporting the claim (1)

  • More linoleic acid (seed oils) linked to less heart disease

    Farvid MS et al.. Circulation 2014 · PMID 25161045 · DOI 10.1161/CIRCULATIONAHA.114.010236
    Meta-analysisindependent cross-checkabstract only checked

    CHD events RR 0.85 highest vs lowest intake.

    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?

    LA and CHD.

    How was the study done?

    Meta-analysis of 13 cohorts.

    How many people, animals or samples were studied?

    310,602 people.

    What was actually found?

    Lower CHD risk.

    How large was the observed effect?

    RR 0.85 (0.78-0.92).

    What do the results mean in everyday life?

    Corn/sunflower oils acceptable.

    What are the study's limitations?

    Observational.

    What does it say about Elawady's specific claim?

    Supports alternative oils, not avoidance of olive oil.

    Do the results apply to Germany and Europe?

    Moderate.

    What can explicitly not be concluded from this study?

    Causation.

    Scientific details →

Studies contradicting or limiting the claim (1)

  • Spanish trial: Mediterranean diet with olive oil prevented heart events

    Estruch R et al.. N Engl J Med 2018 · PMID 29897866 · DOI 10.1056/NEJMoa1800389
    Randomised controlled trialindependent cross-checkabstract only checked★ key study

    HR 0.69; events 3.8% vs 4.4%.

    Does the study support the specific claim? Yes · 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?

    Test Mediterranean diet.

    How was the study done?

    RCT, 4.8 years.

    How many people, animals or samples were studied?

    7,447 high-risk adults.

    What was actually found?

    Fewer major CV events.

    How large was the observed effect?

    HR 0.69 (0.53-0.91).

    What do the results mean in everyday life?

    Olive oil as part of a Mediterranean diet benefits the heart.

    What are the study's limitations?

    Randomisation problems corrected.

    What does it say about Elawady's specific claim?

    Supports olive oil.

    Do the results apply to Germany and Europe?

    High.

    What can explicitly not be concluded from this study?

    Effect of olive oil alone.

    Scientific details →

Studies with mixed or unclear results (2)

  • Old corn-oil trial: cholesterol fell but deaths did not

    Ramsden CE et al.. BMJ 2016 · PMID 27071971 · DOI 10.1136/bmj.i1246
    Randomised controlled trialindependent cross-checkabstract only checked

    No mortality benefit; HR 1.22 death per 30 mg/dL cholesterol drop.

    Does the study support the specific claim? Unclear · 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?

    Re-test the diet-heart hypothesis.

    How was the study done?

    Recovered RCT data + meta-analysis.

    How many people, animals or samples were studied?

    9,423 residents.

    What was actually found?

    No benefit on death.

    How large was the observed effect?

    Meta-analysis CHD mortality 1.13 (0.83-1.54).

    What do the results mean in everyday life?

    Uncertainty about seed oils vs animal fat.

    What are the study's limitations?

    Old, institutional trial.

    What does it say about Elawady's specific claim?

    Adds uncertainty.

    Do the results apply to Germany and Europe?

    Moderate.

    What can explicitly not be concluded from this study?

    That animal fats are better.

    Scientific details →

  • WHO: keep saturated fat at or below 10% of energy

    World Health Organization. WHO guideline 2023
    Guideline / position statementindependent cross-checkfull text checked

    Replace with plant oils rich in unsaturated fats.

    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?

    Set SFA/TFA intake limits.

    How was the study done?

    WHO guideline.

    How many people, animals or samples were studied?

    Global.

    What was actually found?

    Limit SFA to 10% of energy.

    How large was the observed effect?

    Strong recommendation.

    What do the results mean in everyday life?

    Use plant oils instead of animal fats.

    What are the study's limitations?

    Population advice.

    What does it say about Elawady's specific claim?

    Contradicts unrestricted ghee.

    Do the results apply to Germany and Europe?

    High.

    What can explicitly not be concluded from this study?

    Effect of a single meal.

    Scientific details →

Regional context

Germany / EU

Authentic olive oil is regulated by EU marketing standards (not fetched here).

Egypt

Olive oil quality and adulteration in the Egyptian market were not assessed.

What applies in my country?

General scientific assessment

Mostly false There is no evidence that olive oil is harmful; corn and sunflower oil are acceptable alternatives, but avoiding olive oil is not supported.

The following areas of food safety are relevant to this statement:

  • Additives and processing
  • Controls, imports, recalls, labelling

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.

Country of residence or purchase Compare with another country

References

  1. Dietary linoleic acid and risk of coronary heart disease: a systematic review and meta-analysis of prospective cohort studies.. Farvid MS et al.. Circulation 2014 · PMID 25161045 · DOI 10.1161/CIRCULATIONAHA.114.010236
  2. Primary Prevention of Cardiovascular Disease with a Mediterranean Diet Supplemented with Extra-Virgin Olive Oil or Nuts.. Estruch R et al.. N Engl J Med 2018 · PMID 29897866 · DOI 10.1056/NEJMoa1800389
  3. Re-evaluation of the traditional diet-heart hypothesis: analysis of recovered data from Minnesota Coronary Experiment (1968-73).. Ramsden CE et al.. BMJ 2016 · PMID 27071971 · DOI 10.1136/bmj.i1246
  4. Saturated fatty acid and trans-fatty acid intake for adults and children: WHO guideline. World Health Organization. WHO guideline 2023

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