I go to an internal medicine doctor.he did an a1c check and it was 6.1.he put me on metformin. why?

Pre-diabetes: An A1c of 6.1% means you have pre-diabetes. Treatment for pre-diabetes include diet and exercise, metformin, or combination of both. Studies have shown that diet/exercise can decrease your risk of getting diabetes by 58%, metformin use can decrease it by 31%. Your doctor have chosen to do both. This is a common practice and a decision made by both of you.

Weight: Metformin has been shown to improve blood sugar control as well as help with weight loss in patients with healthy kidneys.