thyroid gland and soy?

i’ve heard that drinking or eating too much soy foods can cause an irregular thyroid function, but some amounts of soy can also be good for you.
1) Does drinking too much soymilk or eating too much soy cause underactive or overactive thyroid function?
2) if so, how much soy is too much and how often should i drink or eat soy foods?
3) can an overactive or underactive thyroid gland stunt my height growth or make me stop from getting any taller?
(im only 14 and i want to get taller)