Aim Evidence of a possible connection between gut microbiota and several physiological processes linked to type 1 diabetes is increasing. However, the effect of multistrain probiotics in people with type 1 diabetes remains unclear. This study investigated the effect of live combined Bifidobacterium and Lactobacillus preparation on glycemic control and other diabetes-related outcomes in people with type 1 diabetes.

Design A randomized, single-blind, parallel-group, controlled clinical trial. Setting Diabetes clinic of a teaching hospital in Shenzhen China Participants A total of 30 participants with type 1 diabetes, aged 18-60 years, will be recruited and randomly assigned to receive either probiotics (n = 15) or placebo (n = 15) for 12 weeks.

Outcomes Primary outcomes were glycemic control related parameters, and secondary outcomes were anthropomorphic variables, lipid profile, blood pressure and high-sensitivity C-reactive protein. The gut microbiota profile will be analyzed before and after intervention and between groups.

Inclusion Criteria:

type 1 diabetes patients ,age 18-60years old,18 Kg/m2≤BMI≤30Kg/m2, 7.0mmol/L\