You know, don’t you, that no amount of wishing that this were not the case can make it not the case. No amount of praying that you are not transgende… - Jennifer Finney Boylan

But what does that mean, a male brain, or a female brain, or even a transgender one? It’s a fraught topic, because brains are a collection of characteristics, rather than a binary classification of either/or.

And yet scientists continue to study the brain in hopes of understanding whether a sense of the gendered self can, at least in part, be the result of neurology. A study described by author Francine Russo in Scientific American examined the brains of 39 prepubertal and 41 adolescent boys and girls with gender dysphoria. The experiment examined how these children responded to androstadienone, a pungent substance similar to pheromones, that is known to cause a different response in the brains of men and women. The study found that adolescent boys and girls who described themselves as trans responded like the peers of their perceived gender. (The results were less clear with prepubescent children.)

Gender is many things, but one thing it is surely not is a hobby.