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Effects of the Bifidobacterium Longum BL21 on BMI, Metabolic Indicators, and Gut Microbiota in Overweight/Obese Adults

Effects of Supplementing the Bifidobacterium Longum BL21 on BMI, Metabolic Indicators, and Gut Microbiota in Overweight/Obese Adults: a Randomized, Double-blind, Placebo-controlled Trial

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06140641
Enrollment
72
Registered
2023-11-20
Start date
2023-11-29
Completion date
2024-07-30
Last updated
2026-07-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Overweight/Obese Adults

Brief summary

The goal of this study is to investigate the effects of Bifidobacterium longum subspecies BL21 on BMI, metabolic indicators, and changes in gut microenvironment microbiota in overweight/obese adults. The blood, urine, and feces samples of the subjects need to be collected at 0,4 and 8 week and promptly tested in the laboratory. During the intervention period, all groups of subjects were required to take the corresponding products daily and record adverse reactions.

Detailed description

The goal of this study is to investigate the effects of Bifidobacterium longum subspecies BL21 on BMI, metabolic indicators, and changes in gut microenvironment microbiota in overweight/obese adults. Randomized grouping was used to provide probiotic BL21 or placebo intervention. The total duration of the study is 8 weeks, including 8 weeks (1-8 weeks) of intervention expectations. The subjects were followed up at weeks 2 and 6, and sampled at weeks 0, 4, and 8. After the intervention during the follow-up period, blood, urine, and feces samples of the subjects need to be collected and promptly tested in the laboratory. During the intervention period, all groups of subjects were required to take the corresponding products daily and record adverse reactions.

Interventions

DIETARY_SUPPLEMENTProbiotics

Bifidobacterium Longum BL21 or placebo for 8 weeks.

Sponsors

Qilu Hospital of Shandong University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Body mass index (BMI) ≥ 24kg/m2 indicates overweight, and BMI ≥ 28kg/m2 indicates obesity; 2. Willing to take the test formulation daily during the study period; 3. Subjects who understand clinical research and commit to complying with research requirements and procedures.

Exclusion criteria

1. Patients with serious chronic diseases (heart, liver, kidney, hematopoietic system, tumor and other serious diseases, mental disease and organ surgery history, diabetes, etc.) and complications; 2. Patients with severe allergies and immune deficiencies; 3. Pregnant, breastfeeding, or expectant women during the study period 4. Patients with a clear history of gastrointestinal diseases (ulcers, irritable bowel syndrome, etc.); 5. Have a history of intervention with lipid-lowering drugs or health products within the past 2 months; 6. Individuals who have used antibiotics within the past two weeks; 7. Failure to consume the test sample as required, or failure to follow up on time, resulting in uncertain efficacy 8. Subjects deemed unsuitable by other researchers to participate.

Design outcomes

Primary

MeasureTime frameDescription
Effects of intervention with Bifidobacterium longum BL21 on the gut microbiota in overweight/obese adults0, 4 and 8 weekTake stool for microbial community sequencing

Secondary

MeasureTime frameDescription
Effects of intervention with Bifidobacterium longum BL21 on the BMI in overweight/obese adults.0, 4 and 8 weekRecord BMI

Countries

China

Contacts

PRINCIPAL_INVESTIGATORTao Zhou, MD

Qilu Hospital of Shandong University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 23, 2026