Not really an ELI5 answer, but h[ere’s an interesting recent podcast about Food Deserts if you are curious and want to learn more!](https://freakonomics.com/podcast/is-poor-nutrition-a-supply-problem-or-a-demand-problem/) It’s from No Stupid Questions, which is Stephen Dubner (Freakonomics) and Angela Duckworth (Author of Grit).
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