Effect of probiotics on body weight and body-mass index: a systematic review and meta-analysis of randomized, controlled trials

Objective: To assess the efficacy of probiotic therapies on body weight and BMI using a meta-analysis of randomized, controlled trials.

Methods: Twenty studies with 25 trials (1931 participants with age over 18 years) were included. The pooled WMD was calculated by random effects model.

Results: Probiotic consumption significantly reduced body weight by 0.59 kg (95% CI, 0.30–0.87) and BMI by 0.49 kg/m2 (95% CI, 0.24–0.74). A greater reduction in BMI was found with multiple species of probiotics. Subgroup analysis of trials with intervention duration ≥8 weeks found a more significant reduction in BMI. Limiting analysis to trials with a baseline BMI ≥25 kg/m2 showed a greater reduction in BMI.
Conclusion: Consuming probiotics could reduce body weight and BMI, with a potentially greater effect when multiple species of probiotics were consumed, the duration of intervention was ≥8 weeks, or the objects were overweight.

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Quelle: International Journal of Food Sciences and Nutrition

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