The Study
Obesity is an independent risk factor for non‐alcoholic fatty liver disease: evidence from a meta‐analysis of 21 cohort studies
This study looked at lots of people over time and found that those who are heavier are more likely to get a fatty liver. But it doesn't prove that being heavy causes the fatty liver — maybe other things like diet or lack of exercise are also involved.
Analysis score
Maximum 85 for a systematic review with meta-analysis.
Where the score came from
This study looked at many other studies to see if being overweight makes it more likely to get a fatty liver.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 548 / 100
Quality score
Systematic reviews and meta-analyses of cohort studies. They sit above a single cohort study but below a single randomized trial, because the underlying evidence is still observational.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this means even small weight gains can add up to significantly higher liver disease risk over time.
- 2People who are obese have 3.5 times higher risk of fatty liver than normal-weight people.
- 3For every 1-point increase in BMI, risk goes up by 20%.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Obesity Reviews
Year
2016
Authors
L. Li, D. Liu, H. Y. Yan, Z. Wang, S. Zhao, B. Wang
Related Content
Claims (3)
Insulin resistance and chronic inflammation interact in a cycle that increases fat buildup in the liver.
People with obesity have a 3.5 times higher rate of developing non-alcoholic fatty liver disease than people with normal weight.
Higher body mass index (BMI) is directly associated with a 20% higher risk of developing non-alcoholic fatty liver disease for each one-unit increase in BMI.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.