Almost half of all obese children have non-alcoholic fatty liver disease (NAFLD), a condition where fat builds up in the liver. Specifically, studies estimate the prevalence at 47%.

See the scientific wording

Among obese children, the prevalence of non-alcoholic fatty liver disease (NAFLD) is 47%.

Supporting

Moderate

1 study

Contradicting

Moderate

2 studies

There's disagreement

Observational

The 3 studies we reviewed point in different directions — there's no clear consensus.

What the research says

3 studies reviewed

Supporting (1)

Moderate

Prevalence of nonalcoholic fatty liver disease in pediatrics and adolescents: a systematic review and meta-analysis
Systematic Review With Meta-AnalysisMeta-analysis2024
The study looked at many previous studies and found that, on average, about 47% of obese children have fatty liver disease, exactly matching the claim.

Contradicting (2)

Moderate

Adipose-inflammatory factor profiles in children with metabolically healthy obesity and their correlation with NAFLD severity
Cross-Sectional StudyHuman2026
The study found that about 40% of obese children had fatty liver, not 47% as claimed, so the claim overestimates the actual rate.
Metabolic-associated steatotic liver disease in children and adolescents: a scoping review and narrative synthesis of epidemiology, risk factors, and screening approaches with emerging implications for sub-Saharan Africa
Systematic ReviewReview2026
The study says that among obese children worldwide, about 41% have fatty liver disease, not 47% as the claim says, so the claim is too high.

Quality-weighted scoring: we follow the GRADE framework — each study is rated High, Moderate, Low, or Very Low based on study design, methodology rigor, and risk of bias. A single high-quality RCT can outweigh several weaker observational studies.

Scores reflect study quality, not just count.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting, 2 contradicting studies

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