This course explores health equity and social determinants of health. The first part reviews basic concepts of health equity, vital signs of world and Taiwan, and the contribution of medical care to population health. The second part examines health inequalities from different social dimensions, including economic development, social class, gender, neighborhood, social exclusion, life course, globalization, and so on. The third part presents selected issues such as pathways linking social factors and health, global movement for health equity, and health inequalities in Taiwan.