You write "RIght now the only thing that works, is a very strict diet (calorie and carb controlled) and a very rigorous physical training for a long-long years time, to reprogram the insulin receptors." Fortunately, that is not completely true.
I could write an entire thesis here about why this is so, but others already have done so extensively. Just google for "Reverse type 2 diabetes" or LCHF and look out for a website called dietdoctor dot com. Enjoy opening a pandora's box of information.
You might not believe this low carb - high fat (LCHF) moderate protein diet for reversing type 2 diabetes, but what's the harm in trying? In the Netherlands, we are already a few steps further, one of the largest healthcare insurance providers is now providing full coverage for LCHFas an effective and cheap treatment for type 2 diabetes. That has to tell you something.
It's a little-known fact that the current dietary guidelines, primarily based on very weak 50-year-old scientific evidence, are actually driving the non-communicable diseases such as type 2 diabetes and fueling the obesity epidemic. This is why you need to go to places like dietdoctor to find your information and you cannot rely on information from webmd or the mayo clinic. The authors Nina Teicholz and Gary Taubes have written great books about this. Again, enjoy opening a pandora's book.