Global health is the health of populations in a global context; it has been defined as “the area of study, research and practice that places a priority on improving health and achieving equity in health for all people worldwide”. Problems that transcend national borders or have a global political and economic impact are often emphasized. Thus, global health is about worldwide health improvement, reduction of disparities, and protection against global threats that disregard national borders. Global health is not to be confused with international health, which is defined as the branch of public health focusing on developing nations and foreign aid efforts by industrialized countries. The predominant agency associated with global health (and international health) is the World Health Organization (WHO). Other important agencies impacting global health include UNICEF, World Food Programme, and the World Bank. The United Nations has also played a part with declaration of the Millennium Development Goals.