Randomised controlled trialindependent cross-checkabstract only checked I-FAST-06 standard review
Food combining vs normal balanced diet
Similar weight loss with low-energy food combining or balanced diets.
Overview
Golay A et al.. Int J Obes Relat Metab Disord 2000 · PMID 10805507 · DOI 10.1038/sj.ijo.0801185
Separating food groups did not add weight loss.
Does the study support the specific claim? No · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Food combining (dissociated) vs balanced diet at equal energy
- How was the study done?
RCT, 6 weeks in-hospital
- How many people, animals or samples were studied?
54; Obese patients
- What was actually found?
No difference.
- How large was the observed effect?
6.2 vs 7.5 kg
- What do the results mean in everyday life?
Meal mixing does not matter for weight.
- What are the study's limitations?
Short; Small
- What does it say about Elawady's specific claim?
Contradicts C-FAST-06.
- Do the results apply to Germany and Europe?
Swiss study.
- What can explicitly not be concluded from this study?
Effects on digestion symptoms.
Scientific in-depth review
1. Full reference
- Authors
- Golay A et al.
- Journal
- Int J Obes Relat Metab Disord
- Year
- 2000
- Identifier
- PMID 10805507 DOI 10.1038/sj.ijo.0801185
- Verification
- verified – PubMed efetch 2026-10-25 (this agent)
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract
2. Research question
Food combining (dissociated) vs balanced diet at equal energy
3. Study design and population
- Study design
- Randomised controlled trial – RCT, 6 weeks in-hospital
- Population
Obese patients
- Country
Switzerland
- Period
6 weeks
- Sample size
54
- Inclusion and exclusion criteria
As described in the abstract; details not available in abstract.
4. Methods and endpoints
- Exposure / intervention
Dissociated 'food combining' diet 1100 kcal
- Comparator
Balanced diet 1100 kcal
- Endpoints
Weight, body fat, metabolic markers
- Statistical methods
Group comparison
5. Actual results
- Results
Weight loss 6.2 +/- 0.6 vs 7.5 +/- 0.4 kg (n.s.); similar fat and waist-hip changes; glucose, insulin, cholesterol, TG fell similarly; BP fell significantly only with balanced diet.
- Absolute risks
not reported
- Authors' conclusion
At identical energy and composition, food combining brought no additional weight or fat loss.
6. Strengths
- Controlled in-hospital feeding
7. Weaknesses
- Short
- Small
8. Risk of bias
- Orienting tool
- RoB 2
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Small trial.
9. Assessment of the statistical interpretation
No difference.
10. Relevance to the specific claim
Contradicts C-FAST-06.
11. Independent contrary findings
12. Transferability to Germany and Europe
Swiss study.
13. Overall methodological judgement
No benefit of separating foods.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | some concerns |
| Precision of results | low |
| Directness | indirect |
| Reproducibility | unknown |
| Consistency with the overall evidence | unknown |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
None beyond those stated.
15. Linked fact checks
- Meals should consist of a single dish without mixing different foods; a single dish of allowed food is enough to live on. – Studies contradicting or limiting the claim