Effect of probiotic yogurt consumption on glycemic control and lipid profile in patients with type 2 diabetes mellitus: A randomized controlled trial

Type 2 diabetes mellitus (T2DM) is a common endocrine disease. Altered gut microbiota (Dysbiosis) is closely associated with development of T2DM. Growing body of evidence hypothesized that probiotics intake may be useful for patients with T2DM. We investigated the effect of probiotic yogurt consumption on glycemic control and lipid profile in patients with T2DM.In this 12-week randomized controlled clinical trial, seventy-two patients with T2DM were randomly assigned to the intervention group (IG) that received 200 g/d probiotic yogurt containing 4.65 × 106 CFU/g Lactobacillus acidophilus and Bifidobacterium lactis) or placebo group (PG) that received 200 g/d conventional yogurt.We found no difference between two groups in fasting plasma glucose (FPG), hemoglobin A1c (HbA1c), total cholesterol (TC), triglyceride (TG), high density lipoprotein-cholesterol (HDL-c) and low density lipoprotein-cholesterol (LDL-c) after intervention. After adjusting for baseline values of covariate, a significant reduction in HbA1c (mean change: -0.76 ± 1.3 vs. -0.15 ± 1.3; P = 0.01), TC (mean change: -10.61 ± 27.8 vs. -2.97 ± 35.0; P = 0.02) and LDL-c (mean change: -8.62 ± 21.7 vs. 0.02 ± 25.8; P = 0.004) was observed in the IG compared to the PG. In addition, a non-significant trend to reduction was observed in term of FPG (mean change: -19.61 ± 29.1 vs. -4.19 ± 24.2; P = 0.13). TG and HDL-c remained unchanged.Probiotic yogurt consumption may be useful for patients with T2DM. More well-designed clinical trials with longer intervention duration are required. Registered on 30 July 2022 at Iranian Registry of Clinical Trials (IRCT20220226054125N1) with URL: https://www.irct.ir/trial/62304.