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If you took a little bit of dairy, added a slightly larger serving of vegetables, fruits and proteins, and then piled on as many superfluous oils, fats, and grains as possible, you’d have a mock, but also a reasonably accurate picture of the modern American diet.

The Americans on average eat nearly 2,600 calories a day, almost 500 more than they did thirty years ago, according to the USDA, which uses food production data, along with spoilage and waste estimates, to approximate per capita consumption.

That increase alone should be enough to raise an eyebrow (or three hundred million), but what’s most troubling isn’t the increase in our caloric intake, so much as its make-up. Over 92% of the uptick in per capita caloric intake since 1970 is attributable to oils, fats, and grains. Thirty years ago, the combination was responsible for roughly 37% of our daily calories; today, it makes up closer to 47% of our diet.

What exactly we should glean from that reality isn’t entirely clear. Oils, fats, and grains, aren’t inherently bad. In fact, there’s good reason to believe that many fats and oils are actually just the opposite. And grains, despite a growing narrative about their potential harms, come in all shapes and sizes-some are protein-rich, like quinoa, while others offer little, if any, nutritional value, such as enriched white flour.