I have been diagnosed with type 2 diabetes, I am a post-menopausal 55 yr old. I have always eaten really healthily, but, had gone from being a gym junkie to being sedentary in the last 5 years...I have now been exercising regularly for 6 months, including boot camp - intense training for the last 4 weeks - I am still slightly overweight. There has been a slight improvement in my blood tests & my blood pressure is now normal, why is medication still necessary?