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Kale, quinoa, chia, blueberries, all members of a group of foods that have been around for a while, but have seen a sudden surge in global popularity. These so-called super foods are touted for their health benefits, but does their popularity stem from genuine science or robust marketing?

Many super foods are grown in developing countries but have seen a rising popularity among consumers in the global north. Angela Saini explores what happens to a country when the local superfood becomes a global superstar.