Budget-Friendly Metformin Cuts Insulin Dose in Type 1 Diabetes, Trial Shows
A 26-week randomized trial (INTIMET) in 40 adults with long-standing type 1 diabetes found metformin did not improve insulin resistance or glucose control, but reduced total daily insulin requirements by about 12% compared with placebo, suggesting metformin may ease the insulin burden rather than reverse insulin resistance; researchers are exploring whether gut microbiome interactions explain the effect.