My daughter started to get hair "down there" at six and she drank soy milk.
She had all sorts of tests and it was not precocious puberty though, just premature pubarche.
The little girl in Teejay's story had thyroid problems and that was what caused her precocious puberty.
soy milk, in fact any soy product, can be dodgy, callaway - it's got plant oestrogens in it (or is it progesterone? or both - sorry - i forget). and it makes you fart like a hurricane.
but, as you say, there are many other causes. i was just getting on my usual