Backholer K, Gupta A, Zorbas C, et al. - Researchers conducted this systematic review to explore the differential potential exposure and impact of unhealthy food advertising to children according to socio‐economic position and/or ethnicity. In November 2019, nine databases (health, business, marketing) and grey literature have been searched utilizing terms relating to ‘food or drink’, ‘advertising’ and ‘socioeconomic position or ethnicity’. Studies published since 2007 were involved. Unhealthy food advertisement is overwhelmingly exposed to children from minority and socio-economically deprived communities. In order to boost children's diets and eliminate inequalities in dietary consumption, laws to limit unhealthy food advertising to children should be enforced.