I too believe that our GMO "gentically modified food supply" will reveal many underlying causes for many ailments but especially diabetes. Along with that is damage done to our bodies due to an over reliance/abuse of medicines and antibiotics
I don't fancy the idea of us all being guinea pigs for untested genetic manipulation (which is foisted on us for the sole motive of profit, whatever "justification" may be dreamed up), but my initial concern is excessive and unwarranted use of antibiotics. Farm animals are pumped full of these things, which has the sole long-term effect of causing the bugs to evolve so they are no longer susceptible to the drugs - in other words, the drugs cease to have any effect. There are people here who know far more about this than I do, but I believe antibiotics come in "classes" and some of the most common ones have now been negated, Certainly conditions which were 100% destroyed by Penicillin are now immune to pretty well all antibiotics in use, and are again killing people - in Britain people are once again dying from tuberculosis. I believe that people failing to complete courses of antibiotics (because they feel better almost immediately and see no need) has played a major role in this - to the extent that it has been proposed that failing to complete a course of antibiotics should be a criminal offence That won't happen of course as it would be impossible to enforce, but it does indicate how serious it is considered to be.
Back on GM for a moment. This has been a great evil forced on third-world countries, albeit dressed up as a great benefit. Whereas in the old days disease would take a significant proportion of a crop, there would be some left and the next year's crop would come from some of the seeds that were resown. Now they have all been converted to GM crops with far less loss due to disease. But these crops are infertile, allowing Monsanto (primarily) to make a fortune selling seeds to these communities every year. In most cases they don't have a shortage of land and simply grew more crops to allow for the losses due to disease, but now they have to raise hard currency every year just in order to have a crop the following year. These people are mostly simple (I don't mean stupid, just uneducated) and were told all the benefits up-front but not the major earth-shattering cost. Now they have destroyed their old crops and have no way of going back to the old system, and are just where Monsanto want them. This is a gigantic fraud perpetrated on people who believed they could trust the western "experts".
This is before we start considering the health issues associated with eating food that has been tampered with in ways that no-one understands, not least of all the people who did the tampering.