I think you would be OK to tell the doctor you want to try to lose weight and eat the right things rather than go on meds. I went for months to the diabetic nurse before they put me on metformin, which was fine for a while and then I got 'the runs' a lot. I then went on the newcastle diet and lost 4 stone (since put two stone back on) and firstly felt tired and then felt fantastic. There is a slow release metformin which I was going to go on but I went onto the newcastle diet instead. Don't forget, it's your body, eating lots of carbohydrates and taking metformin didnt work for me, I put on a lot of weight and felt sluggish all the time. We (me and my husband - which helps) are now doing the two day "starvation diet" (not really starvation, just cutting down - a lot - 2 days per week. It's more do-able if you know it's only for 2 days. Keep the doctor 'on-side' if you can but in the end, it's your body. Good luck.