In girls with early puberty, things like their parents' height, hormone levels, and the type of medication they take don't seem to affect how fast they grow in the first year of treatment.

Girls with early puberty who get a certain hormone treatment might grow about 2.5 cm taller on average than those who don’t get it, according to a review of several studies.

In girls who start puberty too early and are treated with a certain hormone therapy, those who are taller than average at the start, gain more weight in the first 6 months, or have higher levels of a growth-related hormone might grow faster during treatment — which could help doctors spot who will respond best early on.

Girls with early puberty who get both a hormone blocker and growth hormone end up taller than expected—about 9 cm more—compared to those who only get the hormone blocker, which helps about 5 cm.

In girls getting treatment for early puberty, how fast they're growing after a year is linked to their height, weight, and how much weight they've gained during that time.

Girls with early puberty who take certain hormone treatments might grow more slowly later on if their bones are maturing too fast — this could mean they stop growing sooner than others.