Ultra-processed foods increase the risk of depression and common mental disorders.
Original statement
ترفع خطر ... الاكتئاب
not verbatim – paraphrase. Translation by the project; the Arabic wording is authoritative.
Translation
Ultra-processed foods increase the risk of depression and common mental disorders.
Origin
- Source status
- Archive editors
- Attribution
- Archive editors (study selection and narrative are the archive's, not necessarily Elawady's)
- Origin
- https://eltayebat.com/rule/ultra-processed-foods/
- Attribution uncertainty
- The archive homepage states that the forbidden-food section is supported by research 'independently of Dr. Diaa's words'. No evidence was found that Elawady himself cited these studies.
- Claimed mechanism
Not specified.
- Claimed health effect
Depression, anxiety, common mental disorders.
- Population concerned
Adults
- Geographic restriction by Elawady
none found
Scientific assessment
Potentially true – Some evidence points in favour of the statement, but it is not sufficient for a clear judgement.
Certainty of evidence: low – Further research is likely to change the assessment considerably.
1. What was claimed?
UPF causes depression.
2. What is demonstrably correct?
Adjibade 2019 (A-UPF-11): HR 1.21 (1.15-1.27) per 10% UPF for incident depressive symptoms; Lane 2024: OR 1.53 for common mental disorders (GRADE low).
3. What is wrong or exaggerated?
The 'class I' anxiety and common-mental-disorder results in Lane 2024 (A-UPF-13) come from cross-sectional studies of prevalent outcomes, where direction cannot be established; incident depression rests on two cohorts (1.22, 1.16-1.28; low GRADE). Causal wording ('increase the risk') is not justified; the evidence is associational and low certainty.
4. What remains unclear?
Direction of causality.
5. Which studies support it?
6. Which studies contradict it?
None specific.
7. What applies to Germany and Europe?
French cohort data applicable.
8. What is known about Egypt?
No Egypt data.
9. What practical conclusion is appropriate?
Plausible association; not a reason for diagnosis or treatment decisions.
Assessment details
- Rationale for certainty of evidence
Lane 2024: class I for prevalent anxiety and common mental disorders but GRADE low, largely cross-sectional data; one NutriNet-Santé cohort (HR 1.21 per 10%). Reverse causation (mood affecting diet) is plausible.
- Source quality
Archive cites appropriate studies; omits low GRADE ratings.
- Regional transferability
Moderate.
- Individual exceptions
Not applicable.
- Regional scope of the claim
- general (biological/medical)
- Last reviewed
- 25 October 2026 provisional
In plain language
People who eat more ultra-processed food report more depression and anxiety in several studies. Much of this comes from one-time surveys, where it is unclear whether diet affects mood or mood affects diet. The link is possible but not proven.
Studies on this claim
Studies supporting the claim (2)
-
Ultra-processed food and depressive symptoms
Adjibade M et al.. BMC Med 2019 · PMID 30982472 · DOI 10.1186/s12916-019-1312-yCohort studycited by the Tayebat archiveabstract only checkedEach 10% more ultra-processed food: 21% more new depressive symptoms.
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?
Is %UPF associated with incident depressive symptoms?
- How was the study done?
Prospective cohort; CES-D.
- How many people, animals or samples were studied?
26,730 (20,380 women + 6,350 men); 2,221 cases; Adults 18-86 without depressive symptoms at baseline
- What was actually found?
HR 1.21 (1.15-1.27) per 10% UPF; significant only for beverages and sauces/added fats subgroups.
- How large was the observed effect?
HR 1.21 (1.15-1.27)
- What do the results mean in everyday life?
Association.
- What are the study's limitations?
Symptom scale, not diagnosis; NOVA misclassification possible; Residual confounding; Self-reported diet
- What does it say about Elawady's specific claim?
Supports C-UPF-04.
- Do the results apply to Germany and Europe?
High.
- What can explicitly not be concluded from this study?
Causation.
-
Umbrella review: ultra-processed food and health
Lane MM et al.. BMJ 2024 · PMID 38418082 · DOI 10.1136/bmj-2023-077310Systematic reviewcited by the Tayebat archivefull text checked★ key studyUPF was linked to 32 of 45 health outcomes; certainty was mostly low.
Does the study support the specific claim? Partly · 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?
What is the credibility of associations between UPF and health outcomes?
- How was the study done?
Umbrella review of 45 pooled analyses with credibility classes and GRADE.
- How many people, animals or samples were studied?
45 pooled analyses; n=9,888,373; Pooled populations
- What was actually found?
Class I: CVD mortality RR 1.50 (1.37-1.63; GRADE very low); T2D dose-response RR 1.12 (1.11-1.13; moderate); prevalent anxiety OR 1.48 (low); common mental disorders OR 1.53 (low). Class II: all-cause mortality RR 1.21 (low), heart-disease mortality HR 1.66 (low), T2D OR 1.40 (very low), depression HR 1.22 (low), sleep OR 1.41, wheezing RR 1.40, obesity OR 1.55 (low). GRADE overall: 22 low, 19 very low, 4 moderate.
- How large was the observed effect?
CVD mortality RR 1.50; T2D 1.12 per dose
- What do the results mean in everyday life?
Consistent links, low certainty.
- What are the study's limitations?
All the studies behind it are observational; many results rest on only 2-4 studies; for most outcomes the certainty is low or very low; the mental-health results come mainly from one-time surveys that cannot show what came first.
- What does it say about Elawady's specific claim?
- Do the results apply to Germany and Europe?
High.
- What can explicitly not be concluded from this study?
Causation.
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 (1)
-
Ultra-processed food and health: meta-analysis
Pagliai G et al.. Br J Nutr 2021 · PMID 32792031 · DOI 10.1017/S0007114520002688Meta-analysiscited by the Tayebat archiveabstract only checkedHighest consumers had 25% higher death risk and 29% higher CVD risk in cohorts.
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?
Is UPF associated with health status?
- How was the study done?
Systematic review and meta-analysis of cross-sectional and cohort studies.
- How many people, animals or samples were studied?
23 studies (10 cross-sectional, 13 cohorts; 183,491 in cohorts); Adults
- What was actually found?
Cohorts: all-cause mortality RR 1.25 (1.14-1.37); CVD 1.29 (1.12-1.48); cerebrovascular 1.34 (1.07-1.68); depression 1.20 (1.03-1.40). Cross-sectional: overweight/obesity +39%, low HDL +102%, metabolic syndrome +79%.
- How large was the observed effect?
RR 1.25 mortality
- What do the results mean in everyday life?
Association.
- What are the study's limitations?
Few studies per outcome
- What does it say about Elawady's specific claim?
- Do the results apply to Germany and Europe?
High.
- What can explicitly not be concluded from this study?
Causation.
No study in this group is marked as key.
Regional context
Germany / EU
French cohort data applicable.
Egypt
No Egypt data.
What applies in my country?
General scientific assessment
Potentially true A plausible but low-certainty association.
The following areas of food safety are relevant to this statement:
- Additives and processing
- Controls, imports, recalls, labelling
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
- Prospective association between ultra-processed food consumption and incident depressive symptoms in the French NutriNet-Santé cohort.. Adjibade M et al.. BMC Med 2019 · PMID 30982472 · DOI 10.1186/s12916-019-1312-y
- Ultra-processed food exposure and adverse health outcomes: umbrella review of epidemiological meta-analyses.. Lane MM et al.. BMJ 2024 · PMID 38418082 · DOI 10.1136/bmj-2023-077310
- Consumption of ultra-processed foods and health status: a systematic review and meta-analysis.. Pagliai G et al.. Br J Nutr 2021 · PMID 32792031 · DOI 10.1017/S0007114520002688