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b'People from certain ethnic minority groups living in the UK are at increased risk of disease and death compared with the majority population, but the reasons for these patterns are not known. It is also not clear at what point during life such differences begin to appear \\u2013 could this be as early as childhood or even infancy? This lecture looks at the origins of ethnic differences in health \\u2013 are they genetic, behavioural, or socio-environmental?'