There is a heated debate on what should be the balance between achieving foreign policy goals using economic sanctions and the adverse effects of sanctions on human rights. In order to find such a balance, one needs to know under what circumstances such negative effects occur and what is the magnitude of these effects. In this study, I attempt to answer these questions by estimating the impact of in utero exposure to sanctions episodes on infant weight, child height, and child mortality. Using repeated cross-sections from 69 developing countries from the Demographic and Health Surveys, I compile a large micro level data set of approximately 800,000 children. I combine the child level data with economic sanctions data and calculate the number of months each child was exposed to sanctions in utero. I use this new data set to estimate the effects of this exposure measure on infant weight z-scores, child height z-scores, and on the probability that the child will die before his third birthday. I find that infants exposed to economic sanctions in utero weigh less than the ones that were not. Children exposed to the first two years of sanctions are more likely to die before their third birthdays than the ones not exposed to the first two years of the sanction. Children who survive particularly deadly types of sanctions still suffer long run negative effects. These children are shorter than the children who were not exposed to sanctions. These results provide important guidelines for the formulation and implementation of future economic sanctions.