Fava bean ingestion triggers acute haemolytic anaemia (favism) in people with G6PD deficiency, which is the most common human enzyme defect and is frequent around the Mediterranean, the Middle East and Egypt.
Original statement
No Arabic original wording available.
Translation
Fava bean ingestion triggers acute haemolytic anaemia (favism) in people with G6PD deficiency, which is the most common human enzyme defect and is frequent around the Mediterranean, the Middle East and Egypt.
Origin
- Source status
- Archive editors
- Attribution
- Archive editors
- Origin
- https://eltayebat.com/rule/legumes/
- Attribution uncertainty
- Archive editorial text and study selection written by the archive operators, not necessarily by Elawady.
- Claimed mechanism
G6PD deficiency limits NADPH production in red cells; fava-bean compounds cause oxidative damage.
- Claimed health effect
Acute haemolysis, sometimes severe and requiring transfusion.
- Population concerned
People with G6PD deficiency (mostly males, X-linked)
- Geographic restriction by Elawady
Elawady links favism to the Mediterranean (Greece, Italy, Egypt, North Africa).
Diverging source versions
عشان انت عارف حاجه اسمها انيميا الفول وانيميا البحر المتوسط اسمع دي انت حافظها جي 6 بي ديفيشنسي معروف في العالم كله
- Source status
- Video transcript (own words)
- Attribution
- Elawady (machine transcript)
- Video
- Dr.D Clinics - Diaa Al Awady is live! تبادل الغازات (Open source)
- Published
- 7 May 2025
- Timestamp
- 0:43:40 (location in the original video’s automatic YouTube caption track; confirms where the words occur, not who speaks)
- Attribution uncertainty
- Archive transcript (YouTube captions or AI-generated); wording may contain transcription errors; no timestamps available.
Scientific assessment
True – The statement is supported by robust evidence.
Certainty of evidence: high – Further research is very unlikely to change the assessment.
1. What was claimed?
Fava beans cause haemolysis in G6PD-deficient people; G6PD deficiency is common and frequent in Egypt.
2. What is demonstrably correct?
This is correct. G6PD deficiency affects about 400-500 million people worldwide; fava bean ingestion is a classic trigger of acute haemolytic anaemia. In a Tanta University series of 1,000 Egyptian children with G6PD-deficiency haemolysis, diet was the precipitant in 83.4%, fava beans in 32.6% and falafel in 19.4%.
3. What is wrong or exaggerated?
Nothing in the core statement is wrong. The problem lies in the derivation (see C-LEG-04).
4. What remains unclear?
Exact population prevalence in Egypt varies by region and method; no nationally representative survey was found.
5. Which studies support it?
Cappellini & Fiorelli 2008; Luzzatto & Arese 2018; Luzzatto et al. 2020; Hagag 2018; Hussein 1992; Abo El Fotoh 2016; Nkhoma 2009.
6. Which studies contradict it?
None.
7. What applies to Germany and Europe?
Relevant for people of Mediterranean, Middle Eastern, African or Asian origin living in Germany; screening of newborns for G6PD deficiency is not part of the routine German newborn screening (not verified in this review).
8. What is known about Egypt?
Highly relevant in Egypt; Egyptian authors recommend neonatal screening.
9. What practical conclusion is appropriate?
People with known G6PD deficiency must avoid fava beans (and certain drugs). A blood test can identify the deficiency.
Assessment details
- Rationale for certainty of evidence
Favism is a well-established clinical entity described in authoritative reviews (Lancet 2008, NEJM 2018, Blood 2020) and in large Egyptian clinical series.
- Source quality
Peer-reviewed reviews and Egyptian clinical studies; the archive cites the reviews correctly.
- Regional transferability
G6PD deficiency is much more frequent in Egypt than in Germany. Egyptian studies report 5.9% deficiency in 1,315 males from two oases and 8.9% among 202 jaundiced neonates (a selected group). For Germany we did not verify a prevalence study; the deficiency is generally considered rare in the native population but occurs in people of Mediterranean, Middle Eastern, African or Asian origin.
- Individual exceptions
Only G6PD-deficient individuals are at risk; heterozygous females can be affected; people with normal G6PD activity are not at risk of favism.
- Regional scope of the claim
- not specified
- Last reviewed
- 25 October 2026 provisional
In plain language
This part of the archive's argument is correct. Some people inherit a deficiency of the enzyme G6PD. If they eat fava beans, their red blood cells can break down suddenly, which can be dangerous, especially for children. The deficiency is relatively common in Egypt and the Mediterranean region and much rarer in people of German origin. A simple blood test shows whether someone is affected.
Studies on this claim
Studies supporting the claim (7)
-
NEJM review on favism
Luzzatto L, Arese P. N Engl J Med 2018 · PMID 29298156 · DOI 10.1056/nejmra1708111Narrative reviewcited by the Tayebat archiveabstract only checkedAuthoritative review of favism; no abstract available to us.
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?
Review favism
- How was the study done?
Narrative review
- How many people, animals or samples were studied?
Not applicable
- What was actually found?
Not verified
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Favism is a recognised condition.
- What are the study's limitations?
Content not read.
- What does it say about Elawady's specific claim?
Supports favism existence only.
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot justify avoidance for non-deficient people.
-
Lancet review on G6PD deficiency
Cappellini MD, Fiorelli G. Lancet 2008 · PMID 18177777 · DOI 10.1016/S0140-6736(08)60073-2Narrative reviewcited by the Tayebat archiveabstract only checked★ key studyG6PD deficiency affects over 400 million people; haemolysis is triggered by external agents and is prevented by avoiding them.
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?
Summarise G6PD deficiency
- How was the study done?
Narrative review
- How many people, animals or samples were studied?
Not applicable
- What was actually found?
400+ million affected; haemolysis triggered by exogenous agents
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
People with the deficiency must avoid triggers such as fava beans.
- What are the study's limitations?
Not systematic
- What does it say about Elawady's specific claim?
Supports favism, not avoidance of legumes by everyone
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot show risk for people with normal G6PD.
-
G6PD deficiency review (Blood 2020)
Luzzatto L et al.. Blood 2020 · PMID 32702756 · DOI 10.1182/blood.2019000944Narrative reviewindependent cross-checkabstract only checked★ key studyAbout 500 million people carry G6PD deficiency; fava beans, some drugs and infections trigger haemolysis.
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?
Review G6PD
- How was the study done?
Narrative review
- How many people, animals or samples were studied?
Not applicable
- What was actually found?
Fava ingestion trigger
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Targeted fava avoidance.
- What are the study's limitations?
Narrative
- What does it say about Elawady's specific claim?
Supports favism; names fava specifically
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot support avoidance for non-deficient people.
-
Favism in Egyptian children
Hagag AA et al.. Endocr Metab Immune Disord Drug Targets 2018 · PMID 28982343 · DOI 10.2174/1871530317666171003160350Case series / case reportindependent cross-checkabstract only checked★ key studyIn 1,000 Egyptian children with G6PD deficiency, haemolysis was most often triggered by fava beans and falafel.
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?
Describe Egyptian G6PD patients
- How was the study done?
Retrospective series
- How many people, animals or samples were studied?
1,000 children
- What was actually found?
Diet main trigger, especially fava
- How large was the observed effect?
32.6% fava, 19.4% falafel
- What do the results mean in everyday life?
Fava avoidance matters for G6PD-deficient children in Egypt.
- What are the study's limitations?
History-based
- What does it say about Elawady's specific claim?
Supports favism; weak for lentils
- Do the results apply to Germany and Europe?
High (Egypt)
- What can explicitly not be concluded from this study?
Cannot show legumes harm G6PD-normal people.
-
G6PD deficiency in jaundiced Egyptian newborns
Abo El Fotoh WM et al.. J Matern Fetal Neonatal Med 2016 · PMID 26866975 · DOI 10.3109/14767058.2016.1148133Cross-sectional studyindependent cross-checkabstract only checkedAbout 9% of jaundiced newborns had G6PD deficiency.
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?
Frequency in jaundiced neonates
- How was the study done?
Cross-sectional
- How many people, animals or samples were studied?
202
- What was actually found?
8.9% deficient
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Relevant for Egypt.
- What are the study's limitations?
Selected sample
- What does it say about Elawady's specific claim?
Context only
- Do the results apply to Germany and Europe?
High (Egypt)
- What can explicitly not be concluded from this study?
Cannot give general prevalence.
-
G6PD deficiency in Egyptian oases
Hussein L et al.. Biochem Genet 1992 · PMID 1590743 · DOI 10.1007/BF02399702Cross-sectional studyindependent cross-checkabstract only checked5.9% of 1,315 men screened in two oases had G6PD deficiency.
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?
Screen oases
- How was the study done?
Population screening
- How many people, animals or samples were studied?
1,315 males
- What was actually found?
5.9%
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Deficiency is common in parts of Egypt.
- What are the study's limitations?
Regional, old
- What does it say about Elawady's specific claim?
Context
- Do the results apply to Germany and Europe?
Moderate
- What can explicitly not be concluded from this study?
Cannot represent all Egypt.
-
Global G6PD prevalence
Nkhoma ET et al.. Blood Cells Mol Dis 2009 · PMID 19233695 · DOI 10.1016/j.bcmd.2008.12.005Meta-analysisindependent cross-checkabstract only checkedAbout 400 million people have G6PD deficiency worldwide; highest in sub-Saharan Africa.
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?
Global prevalence
- How was the study done?
Meta-analysis
- How many people, animals or samples were studied?
280 estimates
- What was actually found?
400 million
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Common worldwide.
- What are the study's limitations?
Heterogeneous
- What does it say about Elawady's specific claim?
Context
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Abstract gives no Egypt/Germany figures.
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
Relevant for people of Mediterranean, Middle Eastern, African or Asian origin living in Germany; screening of newborns for G6PD deficiency is not part of the routine German newborn screening (not verified in this review).
Egypt
Highly relevant in Egypt; Egyptian authors recommend neonatal screening.
What applies in my country?
General scientific assessment
True Favism is real and relevant in Egypt, but it affects only people with G6PD deficiency.
The following areas of food safety are relevant to this statement:
- Pesticides and pesticide residues
- Contaminants (heavy metals, PFAS, PCBs, dioxins, nitrate)
- Mycotoxins (mould toxins)
Legumes and nuts
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
- Favism and Glucose-6-Phosphate Dehydrogenase Deficiency.. Luzzatto L, Arese P. N Engl J Med 2018 · PMID 29298156 · DOI 10.1056/nejmra1708111
- Glucose-6-phosphate dehydrogenase deficiency.. Cappellini MD, Fiorelli G. Lancet 2008 · PMID 18177777 · DOI 10.1016/S0140-6736(08)60073-2
- Glucose-6-phosphate dehydrogenase deficiency.. Luzzatto L et al.. Blood 2020 · PMID 32702756 · DOI 10.1182/blood.2019000944
- Study of Glucose-6-Phosphate Dehydrogenase Deficiency: 5 Years Retrospective Egyptian Study.. Hagag AA et al.. Endocr Metab Immune Disord Drug Targets 2018 · PMID 28982343 · DOI 10.2174/1871530317666171003160350
- Prevalence of glucose-6-phosphate dehydrogenase deficiency in jaundiced Egyptian neonates.. Abo El Fotoh WM et al.. J Matern Fetal Neonatal Med 2016 · PMID 26866975 · DOI 10.3109/14767058.2016.1148133
- Glucose-6-phosphate dehydrogenase deficiency and sulfadimidin acetylation phenotypes in Egyptian oases.. Hussein L et al.. Biochem Genet 1992 · PMID 1590743 · DOI 10.1007/BF02399702
- The global prevalence of glucose-6-phosphate dehydrogenase deficiency: a systematic review and meta-analysis.. Nkhoma ET et al.. Blood Cells Mol Dis 2009 · PMID 19233695 · DOI 10.1016/j.bcmd.2008.12.005