The Study
Exploring the association between dietary fiber intake and hepatic steatosis: insights from NHANES
This study looked at a bunch of people and found that those who ate more fiber tended to have less fat in their livers. But it didn't watch them over time, so we don't know if eating more fiber made their livers better—or if people with fatty livers just ate less fiber because they felt sick.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
Eating more fiber might help reduce fat in your liver, but only if you eat enough — not just a little.
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 544 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — for many people, especially women and non-White groups, eating the typical amount of fiber (under 14g) may not help the liver; you need to eat much more to see a benefit.
- 2Women need at least 13.8 grams of fiber per day to see less liver fat; other racial groups need at least 33.45 grams.
- 3Below those amounts, fiber didn't help.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
BMC Gastroenterology
Year
2024
Authors
Xingxing Chen, Liying Fu, Zhongxin Zhu, Yunchao Wang
Related Content
Claims (6)
Women who consume more than 13.8 grams of dietary fiber per day have a lower prevalence of hepatic steatosis compared to those who consume less.
People who eat more dietary fiber tend to have less fat in their liver, according to measurements from a large national survey of U.S. adults after accounting for other health factors.
In U.S. women, consuming more than 13.8 grams of dietary fiber per day is linked to lower levels of liver fat, while consuming less than this amount shows no consistent difference in liver fat levels.
In U.S. populations of other racial groups, consuming more than 33.45 grams of dietary fiber per day is linked to lower liver fat, while consuming less than this amount is linked to a small, non-significant rise in liver fat.
Among non-Hispanic White individuals, consuming more dietary fiber is linked to lower amounts of fat in the liver, even when accounting for other metabolic factors.
In women and certain racial groups, liver fat levels decrease with increasing dietary fiber intake up to a certain point, then increase again at higher intakes, and this pattern does not follow a straight line across the general population.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.