The intervention was a yogurt drink containing Streptococcus thermophilus , Lactobacillus bulgaricus , and Bifidobacterium animalis subspecies lactis ( BB-12 ) ( 5 10 ( 9 ) cfu/100 mL serving ) , and 1 g of inulin ( synbiotic group ) vs a similar nonsynbiotic-containing acidified milk drink ( placebo group ) once daily for 16 weeks .