Obesity is often accompanied by low-grade chronic inflammation and metabolic syndrome. It has been established that microbiota influences many physiological processes, including the development of obesity, and dysbiosis has been observed in obese individuals. In this study, we aimed to evaluate the impact of a new probiotic formulation, containing two probiotic strains and the bioactive compound octacosanol, on body weight, metabolic parameters, and concentrations of certain adipocytokines and appetite-regulating hormones in obese women. This double blind placebo-controlled supplementary intervention study included twenty-five women in the intervention group and twenty-three in the placebo group, and it lasted 12 weeks. Daily oral supplementation included 7 × 10¹⁰ CFU of Lactiplantibacillus plantarum 299v (DSM9843), 5 × 10⁹ CFU of Saccharomyces cerevisiae var. boulardii (DBVPG6763), and 40 mg of octacosanol or placebo. Body weight, metabolic parameters, adipocytokines, and appetite-regulating hormones were assessed before (T0) and after the intervention (T1). After the intervention, significantly lower median concentrations of CRP (p = 0.005) and IL-6 (p = 0.012) were measured in the intervention group than the baseline, while the median concentrations of ghrelin (p = 0.026) and HDL-cholesterol (p = 0.03) were significantly increased. The intervention group had lower CRP levels (p = 0.023) and higher ghrelin levels (p = 0.006) than the placebo group. Significant changes in BMI between groups were not observed. In summary, although the new probiotic formulation showed beneficial effects on IL-6, CRP, HDL, and ghrelin levels, its potential effects on regulating triglyceride, insulin, and glucose levels require further studies before the novel dietary intervention could be considered a useful adjuvant therapy and an effective strategy for the management of obesity and obesity-associated comorbidities.

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