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-FAT-03

Olive oil is an allowed fat in the system.

Conclusion: Allowing olive oil is in line with good evidence.
  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

زيت الزيتون — مسموح

not verbatim – paraphrase. Translation by the project; the Arabic wording is authoritative.

Translation

Olive oil is an allowed fat in the system.

Origin

Source status
Archive food list
Attribution
Archive food list (eltayebat.com/foods; EN: /en/foods/)
Origin
https://eltayebat.com/foods/
Attribution uncertainty
Classification by the archive; no rationale or video reference given on the list page.
Claimed mechanism

Not stated (natural fat).

Claimed health effect

Implied: healthy/acceptable.

Population concerned

Everyone.

Geographic restriction by Elawady

none found

Diverging source versions

اشوِ السمك بزيت الزيتون.

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 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?

Olive oil is allowed.

2. What is demonstrably correct?

PREDIMED (I-FAT-04): HR 0.69 (0.53-0.91) for major cardiovascular events with Mediterranean diet + extra-virgin olive oil vs control (high-risk Spanish adults). WHO suggests replacing saturated fat with plant-source MUFA (conditional) (I-FAT-08).

3. What is wrong or exaggerated?

The PREDIMED effect is for a whole Mediterranean diet with olive oil, not olive oil alone; the original 2013 publication was withdrawn and re-published because of randomisation irregularities. The archive's classification conflicts with Elawady's later advice to avoid olive oil (C-FAT-04).

4. What remains unclear?

Effect of olive oil in diets otherwise rich in ghee/butter.

5. Which studies support it?

I-FAT-04, I-FAT-08.

6. Which studies contradict it?

None for health; internal contradiction with C-FAT-04.

7. What applies to Germany and Europe?

Olive and rapeseed oil are commonly recommended plant oils in Europe (not separately verified).

8. What is known about Egypt?

Olive oil adulteration is a reported concern in many markets (not verified here for Egypt).

9. What practical conclusion is appropriate?

Allowing olive oil is consistent with the evidence; it is a better default cooking fat than ghee.

Assessment details

Rationale for certainty of evidence

A large RCT (PREDIMED, corrected re-analysis) found fewer major cardiovascular events with a Mediterranean diet supplemented with extra-virgin olive oil vs a low-fat control diet; WHO conditionally recommends plant-source MUFA as a replacement for saturated fat.

Source quality

Archive food list; contradicted by Elawady's own later statements (see C-FAT-04).

Regional transferability

Olive oil is produced and consumed in Egypt and the Mediterranean.

Individual exceptions

Energy-dense; quantity matters for weight.

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

In plain language

The archive lists olive oil as allowed. This fits the research: a large Spanish trial found fewer heart attacks and strokes in people at high risk who followed a Mediterranean diet with extra olive oil. Health bodies advise using plant oils like olive oil instead of animal fats. Note that Dr. Elawady himself later advised against olive oil in some live videos.

Studies on this claim

Studies supporting the claim (2)

  • 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 →

  • 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 →

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

Olive and rapeseed oil are commonly recommended plant oils in Europe (not separately verified).

Egypt

Olive oil adulteration is a reported concern in many markets (not verified here for Egypt).

What applies in my country?

General scientific assessment

Mostly true Allowing olive oil is in line with good evidence.

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. 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
  2. Saturated fatty acid and trans-fatty acid intake for adults and children: WHO guideline. World Health Organization. WHO guideline 2023

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