That's what I want to know about. What happened that gave them extremely unpleasant deaths? How did they die? Please tell me exactly what happened. Amputations, kidney failure, cancer, WHAT?
I'm sorry, I misunderstood your question. To begin with, I've seen way more problems from diabetes than most because my father's family has a strong history of this disease. It hit both of my grandparents and several of their siblings, plus numerous aunts, uncles and cousins of first, second and third degree. (My large family mostly remained where they first planted themselves when emigrating from Italy, and were close-knit, so I saw these people on a regular basis.)
My husband's mother and sister both had - and died from - complications of poorly managed diabetes. One from congestive heart failure, one from renal failure.
Diabetes is now popping up with alarming frequency among my cousins and their kids. Some, like their ill-fated parents before them, cheat like the dickens.
Among family and friends with poorly controlled diabetes: None had cancer. Four went blind. Painful neuropathy has been rampant. ALL constantly battled sores that didn't heal and infections (particularly on their feet) that required hospitalizations. Several had amputation after amputation.
Two died of kidney failure, one had been going for dialysis regularly for a couple of years.
Virtually all of these folks bounced in and out of the hospital with extreme regularity. Most eventually needed their toenails clipped by medical personnel to minimize the likelihood of a tiny cut that would morph into a sore and infection.
My BIL, an accomplished attorney and physicist with a double PhD, and a VP at JPL, was still in his early 50s when he had a major heart attack. His cardiologist told him plainly that his heart and arteries were in terrible condition from the ignored diabetes, and if he didn't change his diet and lifestyle immediately another heart attack would take his life. He thought he was smarter than the doctor (and may have been in some areas), didn't follow the advice or make any changes, and died within six months.
Diabetes is ugly, ugly, ugly when it's not controlled well.
p.s. Interestingly enough, my family has had very little cancer, ditto my husband's. It seems that end of our gene pools runs healthy and deep.