No. Psychologists, psychiatrists, and other mental health professionals agree that homosexuality is not an illness, a mental disorder, or an emotional problem. More than 35 years of objective, well-designed scientific research has shown that homosexuality, in and itself, is not associated with mental disorders or emotional or social problems. Homosexuality was once thought to be a mental illness because mental health professionals and society had biased information.
In the past, the studies of gay, lesbian, and bisexual people involved only those in therapy, thus biasing the resulting conclusions. When researchers examined data about such people who were not in therapy, the idea that homosexuality was a mental illness was quickly found to be untrue.
In 1973 the American Psychiatric Association confirmed the importance of the new, better-designed research and removed homosexuality from the official manual that lists mental and emotional disorders. Two years later, the American Psychological Association passed a resolution supporting this removal.