Non-alcoholic fatty liver disease (NAFLD) is more common in men than in women.
See the scientific wording
NAFLD prevalence is higher in males than in females.
Correlational — new studies may shift this
Observational3 moderate-quality studies link this claim to the outcome, but causation is not established.
What the research says
3 studies reviewedSupporting (3)
Systematic Review With Meta-AnalysisMeta-analysis2024
This study looked at how common fatty liver disease is in kids and found that boys have it more often than girls, which matches the idea that it's more common in males overall.
Systematic Review With Meta-AnalysisMeta-analysis2023
This study found that men develop fatty liver disease at a higher rate than women, which makes sense that more men would have the disease overall.
The prevalence and incidence of NAFLD worldwide: a systematic review and meta-analysis.
Narrative ReviewReview
This big study looked at many people worldwide and found that fatty liver disease is much more common in men (about 40%) than in women (about 26%).
Contradicting (0)
No contradicting studies found yet
That doesn't mean it's settled — it just means no study has tested the opposite.
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 & 3 supporting studies
How Fit Body Science checks a claim
- 1
We isolate the claim
Health advice from videos, articles and studies is broken down into single, testable claims.
- 2
We find the research
Each claim is matched against peer-reviewed studies, with every source cited by DOI.
- 3
We grade the evidence
Studies are scored on methodology, statistical rigor, transparency and publication quality.
The fitness and health internet is full of confident claims. We check them against real research.
Every claim on this site is traced back to peer-reviewed studies, scored on methodology and reporting quality, and given a verdict you can audit yourself — sources, DOIs and all.
- Full evidence breakdown and mechanism chains
- Ask our AI anything about a claim or its studies
- Get notified when new research changes a verdict