I'm actually a little bit surprised to hear this, if only because so much of the "working class" in California -- and increasingly around the country -- is Latino and deeply attached to their foodways. I guess you CAN buy like 15 flavors of Cheetos in the Mexican grocery store near me though...

Yes, but Cheetos are not food. 

Bottom line: Food intake correlates with socioeconomic status.

Nutritional disparities between America’s rich and poor are growing, despite efforts to provide higher-quality food to people who most need it. So says a large study just released from the Harvard School of Public Health that examined eating habits of 29,124 Americans over the past decade. Diet quality has improved among people of high socioeconomic status but deteriorated among those at the other end of the spectrum. The gap between the two groups doubled between 2000 and 2010. That will be costly for everyone.

The primary conclusion of the study is interesting, though, in that its focus is diet quality among the population as a whole. Without accounting for socioeconomic status, there has been, the study reads, “steady improvement.” People aren’t eating more vegetables, or less red or processed meat, and their salt intake increased — which the researchers call “disconcerting” — but Americans are eating more good things like whole fruit, whole grains, nuts, legumes, and polyunsaturated fats.

...

Focusing on calories is out and focusing on food quality is in—they conclude with aplomb: “We urgently need to support multi-pronged initiatives to improve dietary quality for persons of lower socioeconomic status.”

Hey, why didn't you stash "When Feces is the Best Medicine"?

http://www.theatlantic.com/health/archive/2014/09/when-feces-is-the-best-medicine/379491/?single_page=true

I don't want 80% of my stashes to be about POOP!!!

I know poop is in the title but that's actually another fascinating microbiome article.