This man has done amazing work, characterizing the very essence of diabetes diagnosis, and explaining why the epidemic was unstoppable: bad diagnostic medicine underpins the tragedy. He is now in his nineties, healthy no doubt due to his exceptional knowledge of hyperinsulinemia, and the huge propeortion of the modern disease landscape that is dominated by it.
Buy his book, and prepare to be shocked: http://www.amazon.com/Diabetes-Epidemic-You-Joseph-Kraft/dp/142517812X
Explanatory article here from Prof. Grant Schofield (read the letter from Dr. Kraft at bottom): http://profgrant.com/2013/08/16/joseph-kraft-why-hyperinsulinemia-matters/
Summary of his engineering-style profound learnings: http://meridianvalleylab.com/wp-content/uploads/2012/08/GITT-Article-Re-type1.pdf
This man should have a Nobel Prize, but he has been ignored.