Differences in the primary outcome (TMAO levels) after 12 weeks of treatment. In the probiotic group (n=14) TMAO levels were decreased after the treatment. In the placebo groups, TMAO levels were not changed after 12 weeks of treatment. The difference in the TMAO levels after the interventional study procedure was statistically significant between the groups (p=0.044). Wilcoxon Rank Sum Test; TMAO: trimethylamine-N-oxide.