PCOS -- METFORMIN- WEIGHT LOSS
Metformin does help with weight loss. It does this through several mechanisms but the primary one is that it increases muscle cells sensitivity to insulin. The insulin resistance you had was contributing to weight gain and the metformin helps to reverse that. Metformin works best when you are on a low carb diet. I am sure your eating better and being mindful of your health is a major contributing factor to your weight loss as well. Generally the weight loss with the metformin will happen during the first 3 months, after that your body somewhat regulates.
Oh yeah and the whole time I was taking the meds I never once got my period! Then last year my coworker was talking about how she was taking Met for PCOS and after I told her my story she said I should take some of hers. I know its a no no but I did it and in just 2 days I got my period!! I couldn't believe they would work that fast. But after not having it for almost 15 months(not since the Mexican Dr. gave me a shot to force me to have a cycle) I though that would be one crazy coincidence!
Anyways- its kinda OT but I always like to warn people when they talk about Met. because to this day IDK if it was the pills or my body didn't agree with, that form of treatment.