Why are people so stupid?

Seriously? Why? I was reading in Countdown Magazine, that I picked up at the Middle TN JDRF Walk To Cure Diabetes, that 7% of the population is affected by diabetes. They say by 2020 that the number will be 33%. That's one-third. One third of the nation that has Type 1 or Type 2 diabetes. Why do people not seem concerned by this? Why do people not want to learn about this disease that affects so