Fundamental problem with healthcare industry, and food industry for that matter is that everything is profit-oriented vs. result-oriented. There's way more money to be made in treatments than in actual cures.
It's very similar with the food industry... I don't agree with Bernie Sanders on much, but I do agree with him when he talks about the food industry and how they're poisoning us. Next time you go to a grocery store, go take a look at your favorite products and see how much "added sugar" is there in the list of ingredients. Insane! Hell, go look at your regular beef jerky at the store or at the airport. The food industry puts sugar is in EVERYTHING. As a society, we've grown obese... why is that? Sugar. Cancer rates have also skyrocketed.... why is that? Obesity. Look at all these kids with various health issues. It wasn't like that before. What's changed? Obesity rates in our society.
It's pretty hard for Americans to "take care of themselves" when the entire food supply is riddled with foods that invariably lead to obesity, though it's not impossible. Next time at the grocery store, pay attention to the labels and steer clear of anything that has "added sugar." I think if we as society start rejecting sugar, the food industry being profit-driven will adapt as well, and not only that, but we'll also be healthier in general.