Sure I will. Here you go. From the paper:

"While generally considered safe for [treating precocious puberty], recent concern about impacts on polycystic ovarian disease, metabolic syndrome, and future bone density, have been raised. Even less is known about the use of GnRH-analogs to halt normally timed puberty in youth with gender dysphoria; no long-term, longitudinal studies of GnRH-analogs for this indication exist."

Also, some studies have found a risk of long term memory deficits.

As I write in the article, there’s an obvious difference between giving a child a drug so that their natural puberty occurs when it’s supposed to, and giving a child a drug so their natural puberty doesn’t occur at all.

Negative side-effects specific to gender dysphoric children include anorgasmia, potential difficulty with future MtF transition due to a lack of penile growth, and the risk of unnecessary medicalisation as most gender dysphoric children grow out of their dysphoria if allowed to go through puberty unmedicalised. As has been the case since time immemorial.

p.s. I am howling at the fact you cited Quora as a source for what is "provably real". I mean, holy shit.🤣