I am a 74 year old woman in great health except that my glucose level has been increasing over the years and is now at 109. I am 5’0″ tall and weigh 124 lbs. and I can’t lose the fat around my abdomen so I presume I have metabolic syndrom. My primary care doc prescribed Metformin  once a day after I showed him your wonderful articles. I have been taking Metformin for over a month now, my fasting blood glucose level has not dropped, and suddenly my bun/creatine ratio is up (bun is 24, ratio is 43, creatine is .68). Is this due to the Metformin and should I be concerned about my kidney function? I do not eat a lot of carbs or sugars, but I do eat a lot of protein. I cannot talk to my doctor about this because he passed away very recently and unexpectedly so I am reaching out to you. Thank you for your help