Originally Posted by SIRIUSB

In 1952, when the American Psychiatric Association published its first Diagnostic and Statistical Manual of Mental Disorders, homosexuality was included as a disorder. Almost immediately, however, that classification began to be subjected to critical scrutiny in research funded by the National Institute of Mental Health. That study and subsequent research consistently failed to produce any empirical or scientific basis for regarding homosexuality as a disorder or abnormality, rather than a normal and healthy sexual orientation.

In recognition of the scientific evidence, the American Psychiatric Association removed homosexuality from the DSM in 1973, stating that “homosexuality per se implies no impairment in judgment, stability, reliability, or general social or vocational capabilities.” After thoroughly reviewing the scientific data, the American Psychological Association adopted the same position in 1975, and urged all mental health professionals “to take the lead in removing the stigma of mental illness that has long been associated with homosexual orientations.” The National Association of Social Workers has adopted a similar policy.

The research and clinical literature demonstrate that same-sex sexual and romantic attractions, feelings, and behaviors are normal and positive variations of human sexuality. The longstanding consensus of the behavioral and social sciences and the health and mental health professions is that homosexuality per se is a normal and positive variation of human sexual orientation.