Cohort studyindependent cross-checkabstract only checked I-UPF-05 standard review

Emulsifiers and diabetes in France

Food additive emulsifiers and the risk of type 2 diabetes: analysis of data from the NutriNet-Santé prospective cohort study.

Overview

Salame C et al.. Lancet Diabetes Endocrinol 2024 · PMID 38663950 · DOI 10.1016/S2213-8587(24)00086-X

Several emulsifiers were linked with slightly higher diabetes risk.

Does the study support the specific claim? Partly · Methodological quality: moderate

Original publication

Plain-language summary

Study explained simply
What did the researchers want to find out?

Are emulsifiers associated with T2D?

How was the study done?

Prospective cohort with time-dependent additive exposure.

How many people, animals or samples were studied?

104,139; 1,056 T2D cases; Adults, 79% women

What was actually found?

Carrageenans HR 1.03 per 100 mg/day; tripotassium phosphate 1.15 per 500 mg/day; E472e 1.04; sodium citrate 1.04; guar gum 1.11; gum arabic 1.03; xanthan gum 1.08.

How large was the observed effect?

HR 1.03-1.15 per increment

What do the results mean in everyday life?

Small possible effect.

What are the study's limitations?

Single cohort; Multiple testing; Observational design; residual confounding possible; Self-reported dietary intake

What does it say about Elawady's specific claim?

Supports C-UPF-06 weakly.

Do the results apply to Germany and Europe?

High.

What can explicitly not be concluded from this study?

Causation.

Scientific in-depth review

1. Full reference

Authors
Salame C et al.
Journal
Lancet Diabetes Endocrinol
Year
2024
Identifier
PMID 38663950 DOI 10.1016/S2213-8587(24)00086-X
Verification
verified – PubMed efetch 2026-10-25
Retracted
no
Corrections
none
Extent checked
abstract only
Conflicts of interest and funding

Authors declared no competing interests

2. Research question

Are emulsifiers associated with T2D?

3. Study design and population

Study design
Cohort study – Prospective cohort with time-dependent additive exposure.
Population

Adults, 79% women

Country

France

Period

2009-2023; mean 6.8 y

Sample size

104,139; 1,056 T2D cases

Inclusion and exclusion criteria

not stated in abstract

4. Methods and endpoints

Exposure / intervention

Emulsifier intakes

Comparator

Lower intake

Endpoints

Incident T2D

Statistical methods

Cox

5. Actual results

Results

Carrageenans HR 1.03 per 100 mg/day; tripotassium phosphate 1.15 per 500 mg/day; E472e 1.04; sodium citrate 1.04; guar gum 1.11; gum arabic 1.03; xanthan gum 1.08.

Absolute risks

not reported

Authors' conclusion

Direct associations between T2D and several emulsifiers; further research needed.

6. Strengths

  • Large; detailed exposure

7. Weaknesses

  • Single cohort
  • Multiple testing
  • Observational design; residual confounding possible
  • Self-reported dietary intake

8. Risk of bias

Orienting tool
ROBINS-E
Type of assessment
simplified assessment (abstract only)
Full formal assessment
no
Overall risk of bias
some concerns
Rationale

Confounding.

9. Assessment of the statistical interpretation

Small effects.

10. Relevance to the specific claim

Supports C-UPF-06 weakly.

11. Independent contrary findings

None.

12. Transferability to Germany and Europe

High.

13. Overall methodological judgement

Signal.

Multidimensional assessment
Multidimensional assessment
Authenticity of the sourceverified
Methodological qualitymoderate
Risk of biassome concerns
Precision of resultshigh
Directnessdirect
Reproducibilitynot replicated
Consistency with the overall evidenceunknown
Regional transferabilityhigh
Adequacy of the interpretation (by the archive)not applicable

14. Open questions

Replication.

15. Linked fact checks