# Fatty Liver: Weight-Loss Thresholds Differed by Genes and Sex

_Evidence Level: Moderate · Chen L et al., Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, DOI 10.1016/j.cgh.2026.07.019_

*Weight changes differentially impact MASLD incidence, progression and outcomes based on genetic and metabolic risk profiles.*

- **Evidence Level**: Moderate
- **Why this grade**: A prospective UK Biobank analysis of nearly 18,000 people, but with a median four years of follow-up, observational data and model-estimated thresholds.
- **Facts**: Duration: 4 years
- **Publication Types**: Journal Article
- **Journal**: Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association
- **Sample Size**: 11,882 without and 6,013 with MASLD, UK
- **Authors**: Chen L, Chieh Kow AW, Lv G, Guillot A, Tacke F
- **Graded and published**: 2026-10-09
- **Last edited**: 2026-10-12
- **Topics**: Liver Health, Metabolic Health
- **DOI**: https://doi.org/10.1016/j.cgh.2026.07.019
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42854771/

## Summary

How much weight loss went along with a healthier liver varied with a person's genes, metabolic risk and sex. The study looked at MASLD, a fatty liver disease driven by metabolic problems, using UK Biobank data over a median of four years. Each percent of body weight lost was linked to fewer new cases, and among people with the disease, to more frequent resolution. The estimated thresholds varied widely: in the group with high genetic liver risk, they were 5.3 percent for men and 13.3 percent for women. These figures are statistical estimates from observational data, not targets tested in a trial.

## Practical Takeaway

Weight-loss thresholds linked to fatty liver resolution differed by genetic profile, metabolic risk and sex.

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_Canonical: https://longevity-germany.com/en/research/fatty-liver-weight-loss-thresholds-differed-by-genes-and-sex · Part of Longevity Cities · Updated 2026-10-12_