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- Title
Effects of Bifidobacterium animalis subspecies lactis supplementation on gastrointestinal symptoms: systematic review with meta-analysis.
- Authors
Araújo, Maísa Miranda; Vogado, Carolina de Oliveira; Mendes, Marcela Moraes; Gonçalves, Vivian Siqueira Santos; Botelho, Patrícia Borges
- Abstract
Context The effects of probiotics on gastrointestinal (GI) symptoms have been increasingly investigated, particularly that of Bifidobacterium animalis. Clinical trials so far have shown differing evidence regarding these effects in healthy adults. Objective To synthesize the published evidence on the effects of B. animalis subspecies lactis on GI symptoms (GIS) in healthy adults. Data Source A search of the Medline, Embase, Lilacs, Scopus, Web of Science, ProQuest, and Google Scholar databases was conducted for reports on randomized controlled trials published up to October 2021. Data Extraction Population characteristics and data on colonic transit time (CTT), stool consistency, defecation frequency, abdominal pain, bloating, flatulence, volunteer compliance, and adverse events were extracted. A random-effects model was used to estimate the effect of probiotic treatment on these variables. Data Synthesis In total, 1551 studies were identified, of which 14 were included in the qualitative synthesis and 13 in the meta-analysis. Overall, probiotic supplementation increased defecation frequency (standardized mean difference [SMD], 0.26; 95%CI, 0.13–0.39). Subgroup analysis revealed a decrease in CTT (SMD, −0.34; 95%CI, −0.62 to −0.07) in short-term treatment (≤14 d) and an improvement in stool consistency (SMD, 0.76; 95%CI, 0.44–1.08) in individuals without GIS. No improvement in abdominal pain and bloating was found. Conclusions B. animalis subspecies lactis supplementation may increase defecation frequency and, in short-term treatment, may reduce CTT in healthy adults and improve stool consistency in individuals without GIS. More high-quality randomized controlled trials are needed to develop a clinical protocol for the use of this strain to improve these symptoms. Systematic Review Registration PROSPERO registration no. CRD42020154060.
- Subjects
THERAPEUTIC use of probiotics; FECAL analysis; BIFIDOBACTERIUM; GASTROINTESTINAL system; GASTROINTESTINAL motility; META-analysis; MEDICAL information storage &; retrieval systems; SYSTEMATIC reviews; DEFECATION; DIETARY supplements; TREATMENT effectiveness; MEDLINE; ABDOMINAL pain; ADVERSE health care events; ABDOMINAL bloating; FLATULENCE
- Publication
Nutrition Reviews, 2022, Vol 80, Issue 6, p1619
- ISSN
0029-6643
- Publication type
Article
- DOI
10.1093/nutrit/nuab109