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I don't know what study you're cherry picking, but a lit review shows the evidence overwhelmingly supports the idea that transition reduces gender dysphoria and improves outcomes for those who are treated.https://whatweknow.inequality.cornell.edu/topics/lgbt-equality/what-does-the-scholarly-research-say-about-the-well-being-of-transgender-people/ …
The lit review linked to included all studies through 2017. If there's a single new study that says otherwise, the overall picture would not be substantially changed.
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