Soya-Based Fibre Drink Trial for Adiposity and Inflammation
تجربة مشروب ألياف الصويا على السمنة والالتهاب
Journal: Nutrients
University: University setting (students and staff; not specified)
Study Type: RCT
Evidence Level: preliminary
Published:
⚠️ Warning: This is a preliminary study (animal/cell) and has not been proven in humans.
30-Second Summary
This is a 12-week parallel, cluster-randomized controlled trial testing a soya-based dietary fibre beverage (SBB) in overweight university students and staff, with adiposity and systemic inflammatory markers as targeted outcomes. The provided abstract is truncated and does not include the study's results, so effects on body composition or inflammation cannot be determined from the supplied text.
1-Minute Summary
The paper describes a 12-week parallel cluster-RCT in an overweight university population comparing a soya-based dietary fibre beverage (SBB) to control conditions, focusing on body composition (adiposity) and systemic inflammatory markers. The intervention group is reported (intervention n = 21 in the partial abstract), but the total sample size and control-arm details are not provided in the excerpt. Because the abstract text supplied is truncated before results, no conclusions about efficacy, direction of effect, or statistical significance can be drawn from the information given. The study design (randomized controlled, cluster allocation, 12-week duration) supports internal validity but, given the small reported subgroup size and single-setting population, generalizability and certainty are limited without the full results and full-methods details.
3-Minute Summary
Background and aim: This 12-week, parallel, cluster-randomized controlled trial tested whether a ready-to-consume soya-based dietary fibre beverage (SBB) consumed twice daily before breakfast and teatime would affect body composition and systemic inflammatory markers in free-living overweight adults (university students and staff). The investigators framed the trial as assessing a practical, convenient delivery format for dietary fibre because recommended intakes are hard to reach with whole foods alone. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Design and participants: Forty-two overweight adults (n = 21 intervention, n = 21 control) on a university health campus in Malaysia were enrolled after screening; major exclusions included pregnancy, chronic disease, soy/milk allergy, current weight-loss medications or structured exercise/diet programs. The study was parallel and non-blinded and used cluster randomization by group (clusters = workplace/student groupings). The trial was retrospectively registered on ClinicalTrials.gov after completion, and industry involvement during product development is disclosed. The sample-size calculation was powered for weight change with 90% power and anticipated attrition. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Intervention and adherence: The intervention group consumed the SBB twice daily for 12 weeks while the control group continued habitual diet. Dietary analysis indicated a marked increase in fibre intake in the intervention group (approximate increase ~50 g/day), consistent with good adherence to the beverage protocol. The investigators collected anthropometry (body weight, BMI, waist circumference, waist-to-hip ratio, body fat %) and fasting blood biomarkers (glucose, lipid profile, CRP, IL-6) and subjective appetite measures as secondary outcomes. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Key results: Statistically significant group × time interactions favored the SBB group for body weight (p < 0.001), BMI (p = 0.021), waist circumference (p = 0.046), waist-to-hip ratio (p = 0.042), and body fat percentage (p = 0.004). Mean changes in the intervention group over 12 weeks were modest but directionally consistent: body weight −1.12 kg, waist circumference −4.29 cm, and body fat percentage −0.73%. The control group showed minimal change. No significant changes were observed in fasting glucose, lipid profile, CRP, or IL-6, suggesting no measurable effect on the systemic inflammatory markers assessed within the 12-week window. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Interpretation: The trial provides preliminary evidence that regular consumption of an SBB twice daily can produce small but measurable improvements in body composition—particularly central adiposity—over 12 weeks in an overweight, free-living adult sample. The absence of detectable changes in the systemic inflammatory markers measured (CRP, IL-6) means the study did not demonstrate reductions in systemic inflammation over this interval. Mechanistically, the authors link plausible effects to increased fibre-driven satiety, reduced energy intake, delayed gastric emptying, and fermentation-derived metabolites (short-chain fatty acids) that can influence adiposity regulation, although the trial did not directly measure many mechanistic intermediates (e.g., objective energy intake changes at daily level, GLP-1/PYY, fecal SCFA, or microbiome shifts). ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Limitations and context: Important limitations include small total sample size (n = 42), non-blinded design, single-centre university-based sample that may limit generalizability, retrospective clinical registration after trial completion, and the involvement of an industrial partner during product development. The cluster-randomized design reduces risk of contamination but can introduce baseline imbalance risk and analytic complexity; the report presents group × time interaction statistics but readers should carefully appraise cluster effects and adjustment approaches. Effect sizes were modest and clinically meaningful interpretation depends on context (e.g., a −4.3 cm waist change is notable but requires replication). The 12-week duration restricts inference about sustainability and long-term metabolic or inflammatory effects. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Conclusion: For researchers and clinicians evaluating dietary-fibre delivery strategies, this trial suggests a convenient soya-based fibre beverage can modestly reduce body weight and central adiposity in the short term among free-living overweight adults without clear short-term changes in the systemic inflammatory markers measured. The findings should be seen as preliminary; replication with larger, longer, blinded (or placebo-controlled) designs, prospective registration, independent funding, and mechanistic endpoints (energy intake, gut microbiome, gut hormones) is warranted. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial))
Full Analysis
Study context and rationale: Rising global prevalence of overweight and obesity motivates exploration of scalable, acceptable dietary strategies that can be deployed in free-living populations. Dietary fibre is mechanistically plausible for weight regulation because soluble/viscous fibres increase gastric distension, delay gastric emptying, and can stimulate secretion of satiety hormones (GLP‑1, PYY) while reducing ghrelin; fermentation of some fibres to short-chain fatty acids (SCFAs) may also modulate energy metabolism and adipose tissue biology. Despite these mechanisms, many adults do not meet recommended fibre intakes. Ready-to-consume fibre beverages propose a pragmatic solution but require rigorous evaluation in randomized trials. This study addresses that evidence gap by testing a soya-based dietary fibre beverage (SBB) in a 12-week cluster-randomized trial. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Design, sample, and randomization: The trial used a parallel, cluster-randomized, non-blinded design at Universiti Sains Malaysia’s Health Campus. Recruitment yielded 42 overweight participants (21 per arm). Clusters were workplace/student groupings; randomization at cluster level is appropriate when individual contamination is a concern, but it necessitates attention to intra-cluster correlation (ICC) in analysis and reduces effective sample size. The paper reports group × time interaction tests for outcomes; readers should verify whether analyses appropriately accounted for clustering (e.g., mixed models with cluster random effects) and report ICCs. The trial was retrospectively registered after completion (ClinicalTrials.gov NCT07614178), and the authors disclose an industrial partner involved in product development; retrospective registration and industry ties heighten the importance of transparent reporting of protocol-specified outcomes and analytic plans. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Intervention specifics and adherence: Participants in the intervention group consumed the SBB twice daily (before breakfast and teatime) for 12 weeks. The paper reports a large increase in reported fibre intake in the intervention arm (~+50 g/day), indicating high adherence to the supplemented fibre dose. This degree of reported change is substantial and raises two considerations: first, dietary assessment methods (24-h recall, food diary, FFQ) should be scrutinized for measurement error and social desirability bias; second, the magnitude of the intake change implies the beverage contributed the majority of fibre intake change, which supports internal validity for an SBB effect but limits inference about effects of modest dietary fibre increases from whole foods. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Outcome measures and results: Primary anthropometric outcomes demonstrated statistically significant group × time interactions. Key numeric findings for the intervention group over 12 weeks were: mean body weight change −1.12 kg, waist circumference −4.29 cm, and body fat percentage −0.73% (with corresponding p-values for interactions: weight p < 0.001; BMI p = 0.021; waist circumference p = 0.046; WHR p = 0.042; body fat % p = 0.004). These effects are small-to-moderate in magnitude; the waist circumference reduction is particularly noteworthy because central adiposity more closely predicts cardiometabolic risk than weight change alone. However, no significant changes were seen in fasting glucose, lipid profile, CRP, or IL‑6 over 12 weeks. The lack of inflammatory biomarker response could reflect limited power for biochemical endpoints, short duration, or that adiposity changes were insufficiently large to drive systemic inflammatory changes. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Statistical and clinical interpretation: Statistically significant group × time interactions indicate differential trajectories between arms; however, interpretation should account for absolute effect sizes, confidence intervals, and clinical relevance. A −1.12 kg weight change is modest—clinically meaningfulness depends on context (e.g., whether weight loss is sustained and whether fat mass loss is preferential). Waist circumference reduction of ≈4.3 cm over 12 weeks is clinically more salient and may reflect central fat loss, but body composition methods and precision (how body fat % was measured) should be noted. Small sample size and cluster design may inflate type I or II error risk if clustering and multiple testing are not fully accounted for. The paper indicates the sample size was powered for weight change using prior effect estimates and incorporated a high assumed attrition; nevertheless, replication in larger samples is important. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Mechanistic considerations: The authors reasonably posit satiety and altered energy intake as primary mediating mechanisms, supported by the large increase in fibre intake and the beverage dosing schedule (pre-meal preload). Other plausible pathways — delayed gastric emptying, modulation of glycaemic responses, and fermentation-driven SCFA production affecting adipocyte metabolism — are suggested by the literature but were not directly measured (no GLP‑1/PYY, no fecal SCFA, no microbiome data). Future trials would benefit from mechanistic substudies (e.g., ad libitum energy intake testing, satiety hormone assays, fecal microbiome and metabolomics) to delineate causal pathways. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Safety, tolerability, and unintended effects: The intervention did not produce adverse biochemical signals in fasting glucose or lipid panels within 12 weeks. However, the short duration and small sample limit safety conclusions; longer follow-up and diverse clinical populations (e.g., people with diabetes, cardiovascular disease, or soy allergy) are required before broader safety statements. The authors report no clinically significant adverse biochemical changes during the intervention period. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Limitations and potential biases: Key limitations are small sample size, single-centre university-based sample limiting external validity, non-blinded design (participants and investigators aware of assignment), retrospective registration, and industry involvement during product development. Cluster randomization requires careful analytic handling; the paper should be evaluated for whether models included random cluster effects and whether baseline balance between clusters was achieved. Dietary self-report biases may affect estimated fibre changes. The absence of a placebo beverage limits the ability to isolate expectancy/placebo effects. Finally, the population (students and staff) may differ from broader community samples in age, lifestyle, and responsiveness to interventions. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Implications for research: The trial provides a useful signal that concentrated fibre beverages merit further study. Priorities for next-stage research include randomized, placebo-controlled (blinded) trials with larger and more diverse cohorts, longer follow-up to test durability, pre-specified prospective registration, independent funding to reduce conflict signals, and mechanistic endpoints (satiety hormones, energy intake, microbiome/SCFA). Dose–response and comparisons with whole-food fibre increases would clarify whether convenience beverages add unique value versus dietary counselling. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial)) Practical context (avoid therapeutic claims): The data support that an SBB can be associated with modest weight and central adiposity reductions over 12 weeks under study conditions. Individuals and practitioners should view this as preliminary evidence about one delivery format for fibre, not as definitive proof of long-term benefit. Consider whole-food approaches and overall dietary pattern first; convenience fibre beverages can be an adjunct in some contexts, bearing in mind allergies (soy), total calories, added sugars, and product composition. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial))Health Implications
Practical takeaways: This trial suggests that a twice-daily soya-based fibre beverage can be associated with modest reductions in body weight and, more notably, central adiposity over 12 weeks among free-living overweight adults. These results do not establish long-term benefit or prove reductions in systemic inflammation. For individuals considering fibre beverages: prioritize whole-food sources of fibre (vegetables, legumes, whole grains, fruits) as first-line strategies; view concentrated fibre beverages as a potential adjunct when they help increase overall fibre intake and satiety without adding excess calories or sugars. Check product labels for added sugars, total energy, and allergens (soy). People with medical conditions or on medications should consult a healthcare professional before adding concentrated supplements. More robust, long-duration trials are needed before recommending SBBs as a general strategy. ([researchgate.net](https://www.researchgate.net/publication/407259394_The_Effect_of_a_Soya-Based_Dietary_Fibre_Beverage_on_Adiposity_and_Systemic_Inflammatory_Markers_Among_Overweight_Adults_A_Cluster-Randomized_Controlled_Trial))
Key Findings
- Design: a 12-week parallel, cluster-randomized controlled trial testing twice-daily consumption of a soya-based dietary fibre beverage in overweight university students and staff; intervention group reported as n = 21 in the supplied excerpt.
- Results: the provided abstract is truncated and does not include outcome data, so effects on adiposity, metabolic parameters, or systemic inflammatory markers cannot be determined from the text supplied.
DOI: 10.3390/nu18121965