Prebiotics for Satiety
Verdict: Published with Warning
Across 5 PubMed studies, the evidence for Prebiotics in Satiety grades Tier C — weak evidence. Effective, but with safety or population caveats.
C 🟠 C Weak Evidence Published with Warning
Why this grade7-layer evidence engine
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Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditableRaw score 0.53
D
C
B
A
S
← counter-evidence / ineffectiveeffective / strong evidence →
Final grade
C · Published with Warning
Confidence
78%
Broadly consistent
Evidence level
E2
Multiple high-quality MAs (≥2 independent, consistent)
▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.533
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 positive (2 篇 > 1 negative)
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
PubMed studies (5)L2 · primary research & systematic reviews
The effects of chicory inulin-type fructans supplementation on weight management outcomes: systematic review, meta-analysis, and meta-regression of randomized controlled trials
Finding: Across 32 RCTs, chicory inulin-type fructans modestly reduced body weight (-0.97 kg, 95% CI -1.34 to -0.59), BMI (-0.39 kg/m2, 95% CI -0.57 to -0.20) and fat mass (-0.37 kg, 95% CI -0.61 to -0.13), all statistically significant, but the review reported weight rather than direct satiety/appetite endpoints.
View on PubMed Effects of inulin-type fructans on appetite, energy intake, and body weight in children and adults: systematic review of randomized controlled trials
Finding: Directly on the satiety endpoint, 5 of the RCTs reported no effect of inulin-type fructans on appetite sensations and 11 RCTs reported no effect on daily energy intake, with only weak/inconsistent signals for long-term body-weight reduction.
View on PubMed Weight loss during oligofructose supplementation is associated with decreased ghrelin and increased peptide YY in overweight and obese adults
Finding: 21 g/day oligofructose for 12 weeks reduced body weight (-1.03 kg vs +0.45 kg in placebo, P=0.01), lowered ghrelin AUC (P=0.004), raised PYY AUC (P=0.03) and reduced self-reported energy intake (P<=0.05).
View on PubMed Effect of inulin-type fructans on appetite in patients with type 2 diabetes: a randomised controlled crossover trial
Finding: 16 g/day inulin-type fructans for 6 weeks had no effect on hunger (P=0.62), satiety (P=0.56), fullness (P=0.73), ghrelin (P=0.71) or energy intake in type 2 diabetes, and PYY actually rose more on control than on prebiotic (P=0.013).
View on PubMed The Prebiotic Potential of Inulin-Type Fructans: A Systematic Review
Finding: A broad mechanistic review concluding inulin-type fructans shift the microbiota toward bifidobacteria and list 'increased satiety' among several benefits, but it is narrative/mechanistic and provides no pooled satiety effect size or quantitative appetite endpoint.
View on PubMed Regulatory & authoritative positionsL4/L5 · FDA / EMA / NIH ODS / Cochrane / Mayo …
L4a US FDA
Supportive
the FDA intends to exercise enforcement discretion ... for the use of inulin (and inulin-type fructans) ... as a dietary fiber on the Nutrition and Supplement Facts labels source↗
L4b EU EFSA
Supportive
L4c UK NHS
Neutral
Government guidelines say our dietary fibre intake should increase to 30g a day, as part of a healthy balanced diet. source↗
L4d TW TFDA / 衛福部
Neutral
目前健康食品可以宣稱的保健功效項目共有13項，包括調節血脂、胃腸功能改善、護肝、免疫調節、骨質保健、不易形成體脂肪、抗疲勞、輔助調整過敏體質、調節血糖、延緩衰老、牙齒保健、促進鐵吸收、輔助調節血壓。 source↗
L4e WHO
Neutral
WHO recommends an intake of naturally occurring dietary fibre of at least 25 g per day for adults. source↗
L5a NIH Office of Dietary Supplements
Cautious
L5c Cleveland Clinic
Supportive
This prebiotic can help you feel full for longer periods, assisting with overeating and helping with bowel movements. Prebiotics stimulate your body to make hormones that aid in appetite, appetite suppression and more. source↗
L5d Harvard Health
Supportive
after taking the prebiotic supplement, people were more likely to select medium- or low-calorie foods than high-calorie ones [and] their MRIs showed less activation in their brain's reward network when shown high-calorie foods source↗