This study presents fresh evidence on nutrition and health in colonial Kenya by using a new and comprehensive data set of African army recruits and civilians and applying a powerful measure of nutritional status: mean population height. Findings demonstrate huge regional inequalities, but only minor changes in the mean height of cohorts born 20 years before and after colonization. From 1920 onwards secular improvements took place, which continued after independence. I conclude that however bad colonial policies and devastating short-term crises were, the net outcome of colonial times was a significant progress in nutrition and health.