What causes sexual orientation?
It’s not completely known why someone might be lesbian, gay, straight, or bisexual. But research shows that sexual orientation is likely caused partly by biological factors that start before birth.
People don’t decide who they’re attracted to, and therapy, treatment, or persuasion won’t change a person’s sexual orientation. You also can’t “turn” a person gay. For example, exposing a boy to toys traditionally made for girls, such as dolls, won’t cause him to be gay.
You probably started to become aware of who you’re attracted to at a very young age. This doesn’t mean that you had sexual feelings, just that you could identify people you found attractive or liked. Many people say that they knew they were lesbian, gay, or bisexual even before puberty.
Although sexual orientation is usually set early in life, it isn’t at all uncommon for your desires and attractions to shift throughout your life. This is called “fluidity.” Many people, including sex researchers and scientists, believe that sexual orientation is like a scale with entirely gay on one end and entirely straight on the other. Lots of people would be not on the far ends, but somewhere in the middle.
