You could be forgiven if you found deworming to be something of an enigma. Some have hailed it as one of the most cost effective interventions for improving school participation in developing countries. Yet two recent review papers, drawing together the lessons from many studies, find insignificant effects of deworming on learning specifically and only uncertain evidence on cognition more generally. How could this be?
The short answer is that, until a few months ago, both views could be right. I explain why in this 7-minute talk highlighting my recent research.
But if you prefer to read rather than watch the video, allow me to explain.