I actually find this term to be kind of amusing, don't some of you? Think about it. By labeling something "Health food", you're putting it in a special category, as if it's special or uncommon or unique, or different from "regular food". Well, what is the complement of "Health food"? Unhealth food?
The whole purpose of food for living organisms is to provide sustenance and nutrition, in order to maintain survival. But, in this age, things have gotten so bad that the vast majority of people don't see it that way, and the term "health food" is proof of that. Food has become not a necessity of life, but rather a recreational activity. The exponentially-increasing number of obesity-ridden folks and lipitor prescriptions, the rising healthcare costs in America, it's all becoming "the norm", and it is truly, truly sad.
They see us, and the dwindling number of slim, fit, and muscular people as "healthnuts" and we shop at "health food stores", as if it's a plaque, or an epidemic, or a fad.
Sorry to rant, but it's just amazing to think about. Next time someone wants you to make a run to Vons, tell them you don't shop at "Unhealth food stores", just to see what kind of a reaction you get.