The UN say there are as many people with intersex traits in the world as people with red hair. All over the world, children with intersex traits are being operated on to be sex assigned at birth. The BBC’s gender and identity correspondent Megha Mohan has met the people at the forefront of the intersex identity debate including Rosie, a six year-old with ambiguous genitalia, and those leading the way in Kenya. She tells us about sex, its misunderstood relationship with gender and asks who should be making those big decisions about who we are.

Producer: Lucy Hancock.