Barbara and Allan Pease claim to have the answer in their book “Why Men Don’t Listen and Women Can’t Read Maps”. According to the authors lesbianism is a result of what happens in the womb.

            In the book Doctor Glenn Wilson of the institute of psychiatry in London says,

“Certain chemical drugs can interfere with testosterone function and the result can be the birth of a gay baby’’

            If the foetus is a genetic girl (XX) and the brain is dosed in male hormone, the result is a female body with male brain circuitry. As children these girls are usually called tomboys and they play rougher and harder than their female peers. They are likely to grow more body and facial hair than other girls at puberty, they are better at hand-eye and ball skills and as adults are sometimes described as “butch”. A high percentage become lesbians. Accidental dosing of male hormones can occur if the pregnant mother is taking medications that contain high levels of male hormones, like some contraceptive pills, diabetic drugs and other medications.

            There are two main centres associated with homosexual behaviour, the “mating centre” and the “behaviour centre”.

            If the brain of the female foetus inadvertently receives additional male hormones, it can masculinise the mating centre. This means that as a woman she will be attracted to other women. If her behaviour centre is also masculinised, she will take on masculine behaviour, speech and body language, and may be described as “butch”.

            If her behaviour centre is not converted by male hormones, on the other hand, she will remain feminine in her behaviour, but will still be attracted to other females. These results have also been shown in experiments on female rats and monkeys.

            While “butch” lesbians can plainly be seen to be the result of their biology, many people today still resist the idea that feminine lesbians are also a result of their make-up. They suggest these women must have actually chosen to be gay, because they most definitely do not look gay. Just witness the number of men who say, when they see a very feminine or “lipstick”, lesbian, “I bet I could get her to change her mind”.

            These women, however, really are attracted to other women.