People around the world face barriers to accessing quality health care and enjoying the highest attainable standard of health. Why this occurs varies between countries and communities, but some barriers are present everywhere. These include the various forms of discrimination faced by people who are marginalized, stigmatized, criminalized and otherwise mistreated because of their gender, nationality, age, disability, ethnic origin, sexual orientation, religion, language, socioeconomic status, or HIV or other health status, or because of selling sex, using drugs and/or living in prison.