A new report from the Endocrine Society issued this week recommends hormone blockers for children and teens diagnosed with gender identity disorder. Hormone blockers would essentially delay puberty and give children and their parents time to decide the best course of action. According to ABC News:

The hope is that by delaying puberty, young teens will be given valuable thinking time in which they can decide if they are sure they want to begin gender reassignment using cross-sex hormones at the age of 16.

Ultimately, this strategy would also make it easier for them to live in their chosen gender. For example, potential male-to-female transsexuals will not have developed the deep voice, facial changes and body hair associated with adult masculinity. Gender-reassignment surgery should be avoided until the age of 18, the guidelines say.

In May I posted about an NPR story that covered this same issue. In the comments section there was quite a bit of debate about whether or not young people should be on hormones or hormone blockers. Some argued that kids are fickle and go through phases. But I say that this is precisely the reason why hormone blockers can be beneficial. If a teenager decides they're happy with their birth gender, they can always stop taking the hormone blockers and start experiencing puberty. All this does is buy the kid time to decide what's right for them.

That seems to be the consensus of the doctors involved in crafting the guidelines:

"We recommend that adolescents who fulfill eligibility and readiness criteria for gender reassignment initially undergo treatment to suppress pubertal development," say the guidelines.

They state that treatment should not begin before Tanner stage 2 or 3: when female breasts have begun to bud, and boys have experienced a slight enlargement of the penis and scrotum. This is because the teenager's emotional reaction to these first physical changes can help predict whether they will persist in wanting to change their sex.

The recommendations are largely based on the experience of a clinic in the Netherlands where doctors have so far prescribed puberty blockers to more than 70 under-16s. The youngest they have treated is 11, although the majority are 12 or over.

"We don't have any patient who has regretted their decision on the treatment," says Henriette Delemarre-van de Waal of Leiden University Medical Centre who has helped treat them.

The biggest downside of the treatment is that young people could become infertile. However, with the option of adoption, this doesn't remove the possibility of people becoming parents in the future. Tons of kids are in foster care who need loving homes.

This is good news. Let's hope doctors in the US take note.

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