Fruit and vegetables can be expensive in food deserts like Detroit, but beans, brown rice, sweet potatoes, oatmeal...are pretty much the cheapest foods. The reason heart disease plummeted during WWII in Europe was because animal foods became scarce due to poverty. The reason poor countries have such low rates of heart disease, type II diabetes, and bowel cancer is they eat a lot of beans, rice, roots, etc. (Or they do until their markets fill up with cheap refined food like sugar, pastries and shortening.)
I don't think 1 in 1,000 Americans know that heart disease is a food-borne illness, almost completely preventable and reversible. Clinton knows it and preaches it, but still no one knows. Same with type II diabetes. I'm not aware of a case that wasn't reversible in 30 days through a cheap diet alone.