Lactobacillus gasseri
Research reviewed: Up until 03/2026
Lactobacillus gasseri is a dietary supplement with 3 published peer-reviewed studies involving 267 participants, researched for Weight Management, Gut Health & Metabolic Function.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Weight Management
StrongGut Health & Metabolic Function
ModerateResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Weight Management
To evaluate effects of Lactobacillus gasseri SBT2055 on abdominal adiposity in adults
Study Type
Randomized, double-blind, placebo-controlled
Purpose
To evaluate effects of Lactobacillus gasseri SBT2055 on abdominal adiposity in adults
Dose
L. gasseri SBT2055 in fermented milk, 200g/day
Participants
87 adults with higher BMI (24.2-30.7)
Duration
12 weeks
Results
Abdominal visceral and subcutaneous fat areas significantly decreased by average 4.6% from baseline, body weight decreased significantly.
How They Measured It
Abdominal visceral and subcutaneous fat area, body weight
To evaluate Lactobacillus gasseri BNR17 supplementation on visceral fat and waist circumference in obese adults
Study Type
Randomized, double-blind, placebo-controlled
Purpose
To evaluate Lactobacillus gasseri BNR17 supplementation on visceral fat and waist circumference in obese adults
Dose
L. gasseri BNR17 low-dose (10⁹ CFU/day) and high-dose (10¹⁰ CFU/day)
Participants
90 volunteers (BMI 25-35)
Duration
12 weeks
Results
Visceral adipose tissue significantly decreased in high-dose group compared to placebo. Waist circumference reduction observed.
How They Measured It
Visceral adipose tissue, body weight, waist circumference
Gut Health & Metabolic Function
To review Lactobacillus gasseri for weight management and metabolic health
Study Type
Review article
Purpose
To review Lactobacillus gasseri for weight management and metabolic health
Dose
Typical 10⁹-10¹¹ CFU/day
Participants
Multiple study populations
Duration
12-week studies typical
Results
L. gasseri demonstrated effectiveness for weight loss through lipid absorption suppression and alterations in gut-derived signaling. Strain and dose-specific effects noted.
How They Measured It
Literature synthesis of human clinical trials
Frequently Asked Questions
Common questions about Lactobacillus gasseri research
There are currently 5 peer-reviewed studies on Lactobacillus gasseri (Lactobacillus gasseri), involving 267 total participants. Research covers Weight management, Gut health, Metabolic health. The overall evidence strength is rated as Strong.
The evidence is currently rated as "Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (3 human studies), and reported outcomes.
Lactobacillus gasseri has been researched for: Weight management, Gut health, Metabolic health. Each area has its own body of evidence which you can explore in the study breakdowns above.
Yes, 3 out of 5 studies are human trials. Human trials carry more weight in our evidence scoring system.
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