Dear Salim,

Yes, there are several trials tackling these issues!

Here you can find some of them:

1. Efficacy of a Probiotic Formulation on Energy Balance in Overweight Subjects

https://clinicaltrials.gov/ct2/show/NCT01066260

2. Use of Probiotics to Aid in Weight Loss

https://clinicaltrials.gov/ct2/show/NCT01445704

3. Effects of a Probiotic on Body Weight

https://clinicaltrials.gov/ct2/show/NCT01106924

4. Targeting the Gut Microbiome to Investigate the Pathways of Progression From Obesity to Metabolic Diseases in an At-risk Population.

https://clinicaltrials.gov/ct2/show/NCT01433120

5. Effect of Nutritional Interventions on Inflammatory Status in Healthy Overweight Men

https://clinicaltrials.gov/ct2/show/NCT00655798

6. Effect of Probiotics (Vivomixx®) on Weight, Microbiota and Glucose Tolerance in Obese Pregnant Women and Their Newborn (POP)

https://clinicaltrials.gov/ct2/show/NCT02508844

7. Effect of a Synbiotic on the Gut Microbiota and Adiposity-related Markers in Healthy Overweight Subjects

https://clinicaltrials.gov/ct2/show/NCT02151825

Hope this will help you in your research,

Best Regards,

Ilir