Conversion therapy or reparative therapy aims to change people's sexual orientation from homosexual to heterosexual. It is condemned by medical and psychiatry groups such as the American Psychological Association, American Psychiatric Association, Royal College of Psychiatrists, National Association of Social Workers, Royal College of Nursing, and the American Academy of Pediatrics. These scientific and educated groups are concerned that such therapy is a violation of the ethical principles of health care, and violates human rights.