Multiple sources claim that puberty blockers function like a pause button. To name a few:
Using puberty blockers is like hitting a pause button
“The really wonderful feature of puberty blockers is that they are a fully reversible medication,” Roberts says.
it’s more like a pause. If we stop the medicine, puberty can restart,” says Dr. Cartaya. She adds that once it begins again, the body will go through puberty that’s associated with the sex assigned at birth.
However NHS is no longer supporting prior positions, quoting an article
Newly published short-term outcomes research suggests that the effects of puberty blockers, specifically in relation to bone-mass density and height, are not as “fully reversible” as the clinic once promised.
Are puberty blockers reversible*?
If so, to what degree?
Edit 3.11.2022: mayoclinic.org claims
Use of GnRH analogues might also have long-term effects on:
Bone growth and density
Future fertility — depending on when pubertal blockers are started
* To those who wish to quibble about meaning of reversible. I mean something to spirit of 'continue developing (and arriving to result) in the pathway, which would occur without the action/medication taken.' Are people put on blockers losing some biological function or do they suffer something that can't be reversed?