"In a review of 27 studies involving almost 8,000 teens and adults who had transgender surgeries, mostly in Europe, the U.S and Canada, 1% on average expressed regret. For some, regret was temporary, but a small number went on to have detransitioning or reversal surgeries, the 2021 review said."
https://apnews.com/article/transgender-treatment-regret-detr...