In 1923, long before the rise of McDonald’s golden arches, an advertisement for beef made this proclamation in the Bridgeport Telegraph: “Ninety percent of the diseases known to man are caused by cheap foodstuffs. You are what you eat.” The phrase you are what you eat actually dates back to the 17th century. Over time, science has repeatedly demonstrated that nutritional intake directly affects health outcomes. That we are what we eat is a medical fact. But to what degree does what we eat and, thus, our health, depend on where we live and the types of food we have access to?

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