The most calorie dense food is the least healthiest... when you have tens of millions of people with no savings and with little food security in the USA... it's easier said than done.

The US also has over 23m people living in "Food Deserts" - https://www.dosomething.org/us/facts/11-facts-about-food-des... and http://www.ers.usda.gov/data-products/food-access-research-a...