Anthony Costello studied medicine and psychology at Cambridge University. An award-winning professor of child health, he directed the Institute for Global Health at University College London, and until March 2018 was director of maternal, child and adolescent health at the World Health Organization in Geneva. For twenty years he studied the science of community participation through women's sympathy groups with teams in Bangladesh, India, Malawi and Nepal.
A well-known commentator on global health with over 340 academic publications, he chairs the Lancet Countdown on Tracking the Health Impacts of Climate Change. In 2016 he received a Lifetime Achievement Award from the British Medical Journal.
His own sympathy groups have encompassed a book circle, a soul band, a cricket club, and research teams in different cultures. He lives in London with his wife and three children.