Because of favism (and the other narrow risks), legumes should be excluded from everyone's diet.
Original statement
No Arabic original wording available.
Translation
Because of favism (and the other narrow risks), legumes should be excluded from everyone's diet.
Origin
- Source status
- Archive editors
- Attribution
- Archive editors
- Origin
- https://eltayebat.com/rule/legumes/
- Attribution uncertainty
- Derivation in the archive narrative ('these ... explain why Dr. Diaa chose to exclude legumes from his Tayyibat system').
- Claimed mechanism
Generalisation of risks of subgroups to all people.
- Claimed health effect
Avoidance of all legumes.
- Population concerned
Everyone
- Geographic restriction by Elawady
none found
Diverging source versions
- Source status
- Archive food list
- Attribution
- Archive food list (archive editors)
- Origin
- https://eltayebat.com/foods/
- Attribution uncertainty
- Food list compiled by the archive; no video reference per item.
- Source status
- Third-party site (unofficial)
- Attribution
- Third-party site (unofficial)
- Origin
- https://mytayibat.com/forbidden
- Attribution uncertainty
- Unofficial third-party list; lowest attribution level.
Scientific assessment
Mostly false – Essential parts of the statement are not supported by the evidence or are strongly exaggerated.
Certainty of evidence: moderate – Further research may still affect the assessment.
1. What was claimed?
Legumes should be avoided by everyone.
2. What is demonstrably correct?
Several narrow risks are real (see C-LEG-03, C-LEG-06, C-LEG-08, C-LEG-11, C-LEG-12).
3. What is wrong or exaggerated?
The jump from subgroup risks to a universal ban is not justified; the archive's own source Sandberg 2002 says legumes in a balanced diet are not a mineral risk.
4. What remains unclear?
Optimal legume intake for different populations is not precisely defined.
5. Which studies support it?
Only subgroup-specific evidence.
6. Which studies contradict it?
Zargarzadeh 2023, Ha 2014, Afshin 2014; Sandberg 2002 (archive-cited).
7. What applies to Germany and Europe?
European guidelines recommend legumes as part of a healthy diet.
8. What is known about Egypt?
Legumes are an affordable protein source in Egypt; universal avoidance could reduce protein, fibre and folate intake in low-income households.
9. What practical conclusion is appropriate?
Individual restriction for defined conditions; no general ban.
Assessment details
- Rationale for certainty of evidence
Each cited risk applies to a defined subgroup or situation (G6PD deficiency, raw beans, IBS, peanut allergy, soy formula). The benefits of legumes in the general population are supported by RCTs (LDL) and cohort meta-analyses (mortality).
- Source quality
Derivation by the archive; the cited studies themselves do not recommend general avoidance (Sandberg 2002 states that in a balanced diet a high legume intake is not a mineral risk).
- Regional transferability
Applies equally to Germany and Egypt; in Egypt the G6PD subgroup is larger, which supports targeted screening, not universal avoidance.
- Individual exceptions
Targeted avoidance is justified for G6PD deficiency (fava), legume allergies, and as a temporary trial in IBS.
- Regional scope of the claim
- general (biological/medical)
- Last reviewed
- 26 October 2026 provisional
Scientific evidence in detail
Scientifically refuted – High-quality evidence shows the opposite, or the claim contradicts well-established physiology.
Research question: Do the narrow risks of legumes (favism, raw-bean lectins, IBS, allergy, soy formula) justify excluding legumes from everyone's diet?
Research question in detail (PICO)
- Population
- General population
- Intervention or exposure
- Universal exclusion of legumes
- Comparison
- Targeted avoidance only in affected groups
- Geographic scope
- universal; Egypt (affordability of legume protein)
- Outcomes
- Health outcomes in the general population
- Prevention of subgroup harms
Study results as reported by the authors. Our assessment follows below.
What speaks for the claim?
No high-quality evidence supporting the claim was found.
What speaks against the claim?
Favism at different ages
Beretta A et al.. Nutrients 2023 · PMID 36678214 · DOI 10.3390/nu15020343 Narrative reviewfull text checkednewly addedFavism affects only G6PD-deficient people, and only a minority of deficient adults react; other legumes lack vicine/convicine.
- Actual result
- About 25% of deficient adults develop a crisis after fava beans (cited).
- Methodological quality
- low-moderate (narrative)
- Relevance
- direct to the derivation
- Limitations
- Case-based.
Legumes, heart disease and diabetes (Nordic review)
Thorisdottir B et al.. Food Nutr Res 2023 · PMID 37288088 · DOI 10.29219/fnr.v67.9541 Meta-analysisabstract checkednewly addedLegumes show no harm signal for CVD/T2D and improve lipids and glucose markers in RCTs.
- Actual result
- LDL -0.19 mmol/L; cohorts null.
- Methodological quality
- high
- Relevance
- direct
- Limitations
- Low-intake populations.
Dietary guidelines in the Eastern Mediterranean
Al-Jawaldeh A et al.. Int J Environ Res Public Health 2025 · PMID 41464425 · DOI 10.3390/ijerph22121790 Systematic reviewabstract checkednewly addedSeveral Arab national dietary guidelines recommend legumes daily.
- Actual result
- e.g. 'Eat legumes daily'.
- Methodological quality
- guideline review
- Relevance
- direct (policy)
- Limitations
- Egypt lacks a national FBDG.
What does the overall evidence say?
Editorial assessment based on the studies above – not itself a study result.
Which position is better supported?
Targeted restriction for defined conditions; no universal exclusion.
Why some studies weigh more
Logical structure plus population evidence of safety.
Is a causal relationship established? Not applicable The question concerns a derivation, not a causal effect.
Remaining uncertainty
None material.
Justified conclusion
Subgroup risks do not justify banning legumes for everyone.
Does this depend on the country?
- General biological effects
- Universal.
- Eating habits
- Legumes are an affordable protein in Egypt.
- Origin of the food
- Not relevant.
- Contaminants
- Not applicable.
- National production conditions
- Not applicable.
- Legal rules
- Not applicable.
- Actual monitoring data
- Not applicable.
A regional difference that changes the conclusion is not supported by robust data.
Certainty of the overall evidence (GRADE, simplified)
- Main outcome
- Harm from legumes in the general population
- Starting level
- low (observational studies)
- Reasons for upgrading
- consistent null-to-favourable findings across designs
- Result
- moderate
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
- WHO: Healthy diet (fact sheet) (2026) · Original publication
Lists pulses (lentils, chickpeas, beans, dried peas) as part of a healthy diet; at least 400 g fruit and vegetables per day; free sugars include sugars naturally present in fruit juices and juice concentrates; no added sugar in complementary foods for infants. - ADA: 5. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes-2026 (registered as I-INTC-03) (2026) · Original publication
Eating patterns should emphasise whole fruits, legumes and other minimally processed high-fibre carbohydrate sources; replace sugar-sweetened beverages (including juices) with water or low/no-calorie beverages; minimise added sugar; incorporate plant protein such as legumes. - WHO EMRO-affiliated review of national FBDGs: Food-Based Dietary Guidelines in Countries of the Eastern Mediterranean Region (I-LEG-136) (2025) · Original publication
Several Arab national guidelines advise eating legumes daily (e.g. 'Eat legumes and dishes made with legumes once a day'); Egypt had no national FBDG in this review. - FAO: Food-based dietary guidelines - Egypt (FAO repository page) (n/a) · Original publication 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 |
|---|---|---|---|---|---|
| PubMed | 26 October 2026 | (legume intake[tiab] OR pulse consumption[tiab] OR legume consumption[tiab]) AND (increased risk[tiab] OR positive association[tiab] OR adverse[tiab]) AND (cohort[tiab] OR meta-analysis[tiab]) | supporting evidence | 6 | |
| Europe PMC | 26 October 2026 | (TITLE:legume OR TITLE:legumes OR TITLE:pulses OR TITLE:beans) AND (TITLE:risk OR TITLE:mortality OR TITLE:harm OR TITLE:adverse) AND ("meta-analysis" OR cohort) AND ("increased risk" OR "positive association") | supporting evidence | 16 | |
| PubMed | 26 October 2026 | (food groups[ti]) AND (risk[ti]) AND (meta-analysis[ti]) AND (diabetes[ti] OR mortality[ti] OR hypertension[ti] OR heart[ti]) | supporting evidence | 5 | |
| PubMed | 26 October 2026 | (legume*[ti] OR pulse*[ti] OR bean*[ti]) AND (mortality[ti] OR cardiovascular[ti] OR coronary[ti]) AND (meta-analysis[pt] OR meta-analysis[ti] OR umbrella[ti]) | contradicting evidence | 26 | |
| Europe PMC | 26 October 2026 | (TITLE:legume OR TITLE:legumes OR TITLE:pulses) AND (TITLE:mortality OR TITLE:cardiovascular OR TITLE:diabetes) AND (TITLE:"meta-analysis" OR TITLE:"umbrella review") | contradicting evidence | 8 | |
| PubMed | 26 October 2026 | (legume*[ti] OR pulse*[ti]) AND (diabetes[ti] OR glycemic[ti] OR glycaemic[ti]) AND (meta-analysis[pt] OR meta-analysis[ti]) | contradicting evidence | 9 | |
| Europe PMC | 26 October 2026 | TITLE(favism) | both directions | 378 | |
| PubMed | 26 October 2026 | favism[MeSH] AND (child[MeSH] OR children[tiab]) AND (fava[tiab] OR faba[tiab] OR broad bean*[tiab]) | supporting evidence | 34 | |
| Europe PMC | 26 October 2026 | ("G6PD deficiency" OR "glucose-6-phosphate dehydrogenase deficiency") AND (Arab OR "Saudi Arabia" OR "Middle East" OR Gulf OR Oman OR Iraq OR Jordan OR Palestin*) AND (prevalence OR "systematic review" OR "meta-analysis") | supporting evidence | 1337 |
Open questions
None.
How deeply was this checked?
8 linked studies: 2 checked in full text (1 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
In plain language
The archive lists real risks of legumes, but each applies only to some people or to raw beans. For example, only people with G6PD deficiency need to avoid fava beans, and only people with a peanut allergy need to avoid peanuts. For most people, cooked legumes are a healthy source of protein and fibre. One of the studies cited by the archive itself states that legumes are not a problem in a balanced diet.
Studies on this claim
Studies supporting the claim (0)
No studies in this group.
Studies contradicting or limiting the claim (7)
-
Legumes and death rates
Zargarzadeh N et al.. Adv Nutr 2023 · PMID 36811595 · DOI 10.1016/j.advnut.2022.10.009Meta-analysisindependent cross-checkfull text, structured risk-of-bias assessment★ key studyPeople eating more legumes had about 6% lower risk of death from any cause.
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?
Legumes and mortality
- How was the study done?
Meta-analysis
- How many people, animals or samples were studied?
1.14 million
- What was actually found?
Lower all-cause mortality
- How large was the observed effect?
HR 0.94
- What do the results mean in everyday life?
Legumes compatible with longevity.
- What are the study's limitations?
Observational
- What does it say about Elawady's specific claim?
Contradicts harm claims
- Do the results apply to Germany and Europe?
Moderate
- What can explicitly not be concluded from this study?
Cannot prove causation.
-
Beans and lentils lower LDL cholesterol
Ha V et al.. CMAJ 2014 · PMID 24710915 · DOI 10.1503/cmaj.131727Meta-analysisindependent cross-checkabstract checked★ key studyAbout one serving of pulses daily lowered LDL cholesterol in randomised trials.
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?
Pulses and lipids
- How was the study done?
Meta-analysis of RCTs
- How many people, animals or samples were studied?
1,037
- What was actually found?
Lower LDL
- How large was the observed effect?
-0.17 mmol/L
- What do the results mean in everyday life?
Beans support heart health markers.
- What are the study's limitations?
Short trials
- What does it say about Elawady's specific claim?
Contradicts harm claims
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot show long-term outcomes.
-
Legumes and heart disease
Afshin A et al.. Am J Clin Nutr 2014 · PMID 24898241 · DOI 10.3945/ajcn.113.076901Meta-analysisindependent cross-checkabstract checkedEating legumes regularly was linked to 14% lower heart-disease risk.
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?
Legumes and IHD
- How was the study done?
Meta-analysis
- How many people, animals or samples were studied?
~500,000
- What was actually found?
Lower IHD
- How large was the observed effect?
RR 0.86
- What do the results mean in everyday life?
Legumes compatible with heart health.
- What are the study's limitations?
Observational; overlap
- What does it say about Elawady's specific claim?
Contradicts harm
- Do the results apply to Germany and Europe?
Moderate
- What can explicitly not be concluded from this study?
Cannot prove causation.
-
Minerals from legumes
Sandberg AS. Br J Nutr 2002 · PMID 12498628 · DOI 10.1079/BJN/2002718Narrative reviewcited by the Tayebat archiveabstract checkedPhytate reduces iron and zinc absorption, but processing reduces phytate and balanced diets are not at risk.
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 legume minerals
- How was the study done?
Narrative review
- How many people, animals or samples were studied?
Not applicable
- What was actually found?
Phytate inhibits; soaking/fermenting helps
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Soak, sprout or ferment legumes.
- What are the study's limitations?
Narrative
- What does it say about Elawady's specific claim?
Limits the archive's claim
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot support a legume ban.
-
Favism at different ages
Beretta A et al.. Nutrients 2023 · PMID 36678214 · DOI 10.3390/nu15020343Narrative reviewindependent cross-checkfull text checked★ key studyFava beans trigger haemolysis through vicine and convicine, which other legumes do not contain; infants and young children are most at risk.
Risk confined to G6PD-deficient people; only ~25% of deficient adults react.
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 favism by age.
- How was the study done?
Narrative review of case reports.
- How many people, animals or samples were studied?
Published cases worldwide.
- What was actually found?
Severity highest in infants; raw beans most risky.
- How large was the observed effect?
Only ~25% of deficient adults react.
- What do the results mean in everyday life?
People with G6PD deficiency should avoid fava beans; other legumes are not known triggers.
- What are the study's limitations?
Case-based, no systematic search.
- What does it say about Elawady's specific claim?
Limits the lentil claim and the universal ban.
- Do the results apply to Germany and Europe?
Universal biology.
- What can explicitly not be concluded from this study?
It cannot rule out rare reactions to other pulses.
-
Legumes, heart disease and diabetes (Nordic review)
Thorisdottir B et al.. Food Nutr Res 2023 · PMID 37288088 · DOI 10.29219/fnr.v67.9541Meta-analysisindependent cross-checkabstract checked★ key studyCohorts showed no clear link with heart disease or diabetes, while trials showed lower cholesterol and glucose with legumes.
Supports legumes in healthy diets for the general population.
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?
Assess legumes and cardiometabolic disease.
- How was the study done?
Systematic review and meta-analysis.
- How many people, animals or samples were studied?
31 cohorts, 16 trials.
- What was actually found?
Null hard endpoints; better LDL and glucose.
- How large was the observed effect?
LDL -0.19 mmol/L.
- What do the results mean in everyday life?
Eating legumes is not harmful and modestly improves blood fats and sugar.
- What are the study's limitations?
Low intakes in cohorts; heterogeneity.
- What does it say about Elawady's specific claim?
Contradicts the claim that legumes are harmful.
- Do the results apply to Germany and Europe?
Directly applicable.
- What can explicitly not be concluded from this study?
It does not prove that legumes prevent heart attacks.
-
Dietary guidelines in the Eastern Mediterranean
Al-Jawaldeh A et al.. Int J Environ Res Public Health 2025 · PMID 41464425 · DOI 10.3390/ijerph22121790Systematic reviewindependent cross-checkabstract checkedSeveral Arab national dietary guidelines advise eating legumes daily; Egypt had no national guideline in this review.
Regional guidelines recommend legumes for the general population.
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?
Compare regional dietary guidelines.
- How was the study done?
Document review.
- How many people, animals or samples were studied?
12 national guidelines.
- What was actually found?
Legumes recommended in several.
- How large was the observed effect?
Not applicable.
- What do the results mean in everyday life?
Health authorities in the region encourage legumes.
- What are the study's limitations?
Descriptive.
- What does it say about Elawady's specific claim?
Contradicts a total ban.
- Do the results apply to Germany and Europe?
Consistent with Europe.
- What can explicitly not be concluded from this study?
It does not assess health outcomes.
No study in this group is marked as key.
Studies with mixed or unclear results (1)
-
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 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.
No study in this group is marked as key.
Regional context
Germany / EU
European guidelines recommend legumes as part of a healthy diet.
Egypt
Legumes are an affordable protein source in Egypt; universal avoidance could reduce protein, fibre and folate intake in low-income households.
What applies in my country?
General scientific assessment
Mostly false Risks of specific groups do not justify banning legumes for everyone.
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
- Legume Consumption and Risk of All-Cause and Cause-Specific Mortality: A Systematic Review and Dose-Response Meta-Analysis of Prospective Studies.. Zargarzadeh N et al.. Adv Nutr 2023 · PMID 36811595 · DOI 10.1016/j.advnut.2022.10.009
- Effect of dietary pulse intake on established therapeutic lipid targets for cardiovascular risk reduction: a systematic review and meta-analysis of randomized controlled trials.. Ha V et al.. CMAJ 2014 · PMID 24710915 · DOI 10.1503/cmaj.131727
- Consumption of nuts and legumes and risk of incident ischemic heart disease, stroke, and diabetes: a systematic review and meta-analysis.. Afshin A et al.. Am J Clin Nutr 2014 · PMID 24898241 · DOI 10.3945/ajcn.113.076901
- Bioavailability of minerals in legumes.. Sandberg AS. Br J Nutr 2002 · PMID 12498628 · DOI 10.1079/BJN/2002718
- Favism: Clinical Features at Different Ages.. Beretta A et al.. Nutrients 2023 · PMID 36678214 · DOI 10.3390/nu15020343
- Legume consumption in adults and risk of cardiovascular disease and type 2 diabetes: a systematic review and meta-analysis.. Thorisdottir B et al.. Food Nutr Res 2023 · PMID 37288088 · DOI 10.29219/fnr.v67.9541
- Food-Based Dietary Guidelines in Countries of the Eastern Mediterranean Region: A Comparison and an Update.. Al-Jawaldeh A et al.. Int J Environ Res Public Health 2025 · PMID 41464425 · DOI 10.3390/ijerph22121790
- Glucose-6-phosphate dehydrogenase deficiency.. Cappellini MD, Fiorelli G. Lancet 2008 · PMID 18177777 · DOI 10.1016/S0140-6736(08)60073-2