Hi. Im sorry to hear that your father has diabetes. I understand how hard it can be to see your father with diabetes. My mother was diagnosed with diabetes as well. It was terrible she got so sick a couple times that we had to run to the ER. Im happy to say that my mother now has her diabetes controlled. She can eat, drink whatever she wants now and it's all because we took small steps into taking some naural supplements. If you or anyone else have any questions on how we took these steps to control this I'd be very happy to answer them. You can contact me at my cell at 720-277-1682.