A study showing that it may be possible to change the sexual orientation of gays and lesbians has reopened the debate over whether people are born homosexual or straight.
Controversial research demonstrating that some homosexual men and women were capable of becoming "predominantly" heterosexual following psychotherapy has created a furore within academia.
The study was based on interviews with 200 men and women who claimed to have had their gay preferences changed following therapy - often provided by religious organisations, members of which believe homosexuality is a developmental abnormality.
Critics believe the study is seriously flawed but supporters argue that it exposes the myth that homosexuality is "hard wired" from birth, which would mean that nothing can be done to alter a person's sexual orientation.
Actually, the % is more like 2-3%. 10% was taken from a study where 25% of the people surveyed were in all-male environments like prisons, the Kinsey study. Studies not done in prisons give the lower figures, even as low as 1.5%.
Of course, that makes 50% seem even more significant. However, it still doesn't prove a genetic link, since genetics tends to have 100% correlations.