A new meta analysis and review shows Probiotic supplementation containing various strains of Lactobacillus have been shown to cause a small but statistically significant weight loss in overweight and obese individuals.
15 studies of Probiotic supplementation studies were reviewed. Larger reductions in body weight, BMI (body mass index) and fat percentages were seen in the supplementation group when compared to the participants receiving a placebo. Even short term supplementation with probiotics (Less than 12 weeks) show small reductions in fat percentage, BMI and body weight.
The studies included in the review lasted between 3 and 12 weeks. All the studies but three used Lactobacillus. More than one of the studies reviewed were not registered and were considered a higher risk of bias.
Other reviews done in the past have found similar conclusions on BMI and body weight reductions; however in some of those studies reviewed participants also received Prebiotics in addition to Probiotics.
Further long term studies are needed to examine the effects Probiotic supplements may have on different measures of body weight.
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