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Culture War Roundup for the week of April 24, 2023

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Then the argument moves to, well isn't puberty blockers irrecoverable harm to the child because of sterilization just like cutting off an arm? I'd say no, the issue isn't the loss of tissue it's the loss of capabilities.

There is good reason to believe that puberty blockers permanently hinder brain development, which hormones during puberty play an important role in. Unfortunately there are zero randomized control trials examining this, and even less evidence regarding using them to prevent puberty entirely rather than to delay precocious puberty a few years, but they have that effect in animal trials:

A reduction in long-term spatial memory persists after discontinuation of peripubertal GnRH agonist treatment in sheep

The long-term spatial memory performance of GnRHa-Recovery rams remained reduced (P < 0.05, 1.5-fold slower) after discontinuation of GnRHa, compared to Controls. This result suggests that the time at which puberty normally occurs may represent a critical period of hippocampal plasticity. Perturbing normal hippocampal formation in this peripubertal period may also have long lasting effects on other brain areas and aspects of cognitive function.

That study also cites this study in humans which found a 3-year course of puberty blockers to treat precocious puberty was associated with a 7% reduction in IQ, but since it doesn't have a control group I wouldn't put much weight on it.

Similar concerns were mentioned by the NHS's independent review:

A further concern is that adolescent sex hormone surges may trigger the opening of a critical period for experience-dependent rewiring of neural circuits underlying executive function (i.e. maturation of the part of the brain concerned with planning, decision making and judgement). If this is the case, brain maturation may be temporarily or permanently disrupted by puberty blockers, which could have significant impact on the ability to make complex risk-laden decisions, as well as possible longer-term neuropsychological consequences. To date, there has been very limited research on the short-, medium- or longer-term impact of puberty blockers on neurocognitive development.