Research
Energy balance
Dietary fiber supplementation leads to small, clinically minor reductions in body weight and body fat percentage, and is not a realistic standalone solution for effective weight reduction.
Do not rely on fiber supplements for significant weight loss. While fiber can help with satiety and minor weight management, its primary value lies in metabolic health, gut health, and cardiovascular protection. Use fiber as part of a broader healthy diet rather than a standalone weight loss strategy.
GoodQualifiesHIGH confidence
Based on current published evidence, dietary fibre appears to associate only with small improvements in body weight... The association of dietary fibre intake with only small improvements in body weight suggests that dietary fibre per se, is not a realistic solution for effective weight reduction.
Why this rating
Supported by multiple RCTs and meta-analyses, though effects are small.
Source
The Health Benefits of Dietary Fibre
Thomas M. Barber et al. · Nutrients · 2020
DOI 10.3390/nu12103209
narrative_reviewCited 851×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- High dietary fiber intake (specifically insoluble cereal fiber and whole grains) is associated with improved insulin sensitivity and a reduced risk of type 2 diabetes, primarily through gut microbiota-mediated mechanisms such as short-chain fatty acid (SCFA) production.Good
- Dietary fiber intake is inversely associated with cardiovascular disease (CVD) risk and CVD mortality, with a dose-response relationship showing reduced risk per 7-10g/day increment.Good
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