What is the average time to develop Type 2 Diabetes?

Before showing symptoms of Type 2 Diabetes, how many months or years it is developing in person’s body. Can we assume the side effects of Diabetes which is affected to other organs at that time. In one magazine I had read, before average 10 years determining of Type 2 Diabetes metabolic and physiological changes are [...] http://bit.ly/qLS7IB