A good message to us all, Mabel. Clearly, doctors don't control our lifestyle, so they are limited to drug therapy. But the origin of many diseases (and classically Type 2 diabetes) is usually lifestyle. As in your case, drugs are only useful to buy you the time to change everything in your life that contributes to the disease. 

The problem is that many people don't make lifestyle and diet changes and rely on drugs that have side-effects and costs and are imperfect. Whether you call it "natural methods" or simply lifestyle changes, taking the personal responsibility to make the hard changes and sticking with them is sufficient in so many cases. 

Congrats on taking the right path.