72% of people whose genetic data is used in studies came from just 3 countries: the UK (40%), the US (19%), and Iceland (12%). Meanwhile, 76% of the world's population lives in Africa and Asia. For precision medicine to be effective, more diverse participants are needed.

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72% of people whose genetic data is used in studies came from just 3 countries: the UK (40%), the US (19%), and Iceland (12%). Meanwhile, 76% of the world's population lives in Africa and Asia. For precision medicine to be effective, more diverse participants are needed.