Global health is the health of populations in a worldwide context;[1] 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".[2] Problems that transcend national borders or have a global political and economic impact are often emphasized.[3] Thus, global health is about worldwide health improvement (including mental health), reduction of disparities, and protection against global threats that disregard national borders,[4][5] including the most common causes of human death and years of life lost from a global perspective.
One way that global health can be measured is through the prevalence of various global diseases in the world and their threat to decrease life expectancy in the present day. Estimates suggest that in a pre-modern, poor world, life expectancy was around 30 years in all regions of the world (mainly due to high infant mortality).[7] Another holistic perspective called One Health can be used to address global health challenges and to improve global health security.[8][9][10]
^Global Health Initiative (2008). Why Global Health Matters. Washington, DC: FamiliesUSA. Archived from the original on 2011-03-08. Retrieved 2008-06-10.
^Macfarlane SB, Jacobs M, Kaaya EE (December 2008). "In the name of global health: trends in academic institutions". Journal of Public Health Policy. 29 (4): 383–401. doi:10.1057/jphp.2008.25. PMID19079297. S2CID46424271.
^White F, Nanan DJ (2008). "International and Global Health". In Wallace RB (ed.). Maxcy-Rosenau-Last Public Health and Preventive Medicine (15th ed.). McGraw Hill. pp. 1252–8. ISBN978-0-07-144198-8.
^Conrad PA, Meek LA, Dumit J (May 2013). "Operationalizing a One Health approach to global health challenges". Comparative Immunology, Microbiology and Infectious Diseases. 36 (3): 211–6. doi:10.1016/j.cimid.2013.03.006. PMID23711930.
^Sinclair JR (May 2019). "Importance of a One Health approach in advancing global health security and the Sustainable Development Goals". Revue Scientifique et Technique. 38 (1): 145–154. doi:10.20506/rst.38.1.2949. PMID31564744. S2CID203608381.