Hello,

Typically, type 2 diabetes cannot manifest into type 1.  In your situation, you may have been misdiagnosed with type 2 in the first place.  If you were an adult in 1981, it's likely that your doctor automatically made a diagnosis of type 2 (which was then called adult onset diabetes) rather than type 1 (also known as juvenille diabetes).  

The other misconception out there has to do with the requirement of insulin to control a patient's blood sugar.  Since type 2s don't often take insulin initially, while type 1 diabetics always need insulin, some people will describe the situation when type 2s begin taking insulin as "turning to type 1."  That's inaccurate.  Basically the patient's diabetes has just advanced to a point where they need insulin.  The cause of type 2 and type 1 are distinct.  Thus, type 2 cannot turn into type 1.