SynthesisWorld journal of gastroenterology2015
Effects of cereal fiber on bowel function: A systematic review of intervention trials.
Synthesis in World journal of gastroenterology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
49 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Fiber intake and laxation in people with normal bowel function: a systematic review.The American journal of clinical nutrition · 2026Pooled it
- Whole Grains, Refined Grains, and Cancer Risk: A Systematic Review of Meta-Analyses of Observational Studies.Nutrients · 2020Pooled it
- Effects of β-Fructans Fiber on Bowel Function: A Systematic Review and Meta-Analysis.Nutrients · 2019Pooled it
- Effects of Cereal, Fruit and Vegetable Fibers on Human Fecal Weight and Transit Time: A Comprehensive Review of Intervention Trials.Nutrients · 2016Pooled it
- Effect of 'FenuflakesTM' on 24-hour glycemic variability in adults with type 2 diabetes: A randomized crossover continuous glucose monitoring study.Asia Pacific journal of clinical nutrition · 2025Trial
- The effects of waxy barley on defecation, sleep, mental health, and quality of life: a randomized double-blind parallel-group comparison study.Journal of physiological anthropology · 2025Trial
- The impact of almonds and almond processing on gastrointestinal physiology, luminal microbiology, and gastrointestinal symptoms: a randomized controlled trial and mastication study.The American journal of clinical nutrition · 2022Trial
- Short-Term Effect of Additional Daily Dietary Fibre Intake on Appetite, Satiety, Gastrointestinal Comfort, Acceptability, and Feasibility.Nutrients · 2022Trial
- Increasing dietary fibre intake in healthy adults using personalised dietary advice compared with general advice: a single-blind randomised controlled trial.Public health nutrition · 2021Trial
- Trial
- Effects of Extrinsic Wheat Fiber Supplementation on Fecal Weight; A Randomized Controlled Trial.Nutrients · 2020Trial
- Effect of High Fiber Cereal Intake on Satiety and Gastrointestinal Symptoms during Ramadan.Nutrients · 2019Trial
- Substituting whole grains for refined grains in a 6-wk randomized trial favorably affects energy-balance metrics in healthy men and postmenopausal women.The American journal of clinical nutrition · 2017Trial
- The Effects of Moderate Whole Grain Consumption on Fasting Glucose and Lipids, Gastrointestinal Symptoms, and Microbiota.Nutrients · 2017Trial
- Trial
- Dietary Fiber Regulation of Gut Microbiota and Bile Acid Metabolism in Animals: Implications for Animal Nutrition.Veterinary sciences · 2026Review
- The impacts of ready-to-eat-cereals and cereal fibers on gut health, body weight, and cardiometabolic health.Frontiers in nutrition · 2026Review
- Effects of Dietary Fiber Supplementation on Gut Microbiota and Bowel Function in Healthy Adults: A Randomized Controlled Trial.Microorganisms · 2025Article
- Nutritional knowledge, fiber intake, body mass index, and sex associated with constipation symptoms in Peruvian adults.Scientific reports · 2025Article
- Dietary fiber consumption and outcomes of different cancers: an umbrella review.Food & nutrition research · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimTo comprehensively review and quantitatively summarize results from intervention studies that examined the effects of intact cereal dietary fiber on parameters of bowel function.
methodsA systematic literature search was conducted using PubMed and EMBASE. Supplementary literature searches included screening reference lists from relevant studies and reviews. Eligible outcomes were stool wet and dry weight, percentage water in stools, stool frequency and consistency, and total transit time. Weighted regression analyses generated mean change (± SD) in these measures per g/d of dietary fiber.
resultsSixty-five intervention studies among generally healthy populations were identified. A quantitative examination of the effects of non-wheat sources of intact cereal dietary fibers was not possible due to an insufficient number of studies. Weighted regression analyses demonstrated that each extra g/d of wheat fiber increased total stool weight by 3.7 ± 0.09 g/d (P < 0.0001; 95%CI: 3.50-3.84), dry stool weight by 0.75 ± 0.03 g/d (P < 0.0001; 95%CI: 0.69-0.82), and stool frequency by 0.004 ± 0.002 times/d (P = 0.0346; 95%CI: 0.0003-0.0078). Transit time decreased by 0.78 ± 0.13 h per additional g/d (P < 0.0001; 95%CI: 0.53-1.04) of wheat fiber among those with an initial transit time greater than 48 h.
conclusionWheat dietary fiber, and predominately wheat bran dietary fiber, improves measures of bowel function.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.