I need your help with tofu, AGAIN! :D

[KentaRawr!]

Before, I was just figuring out how to use tofu. Now, however, a friend of mine has told me to not eat tofu, for health reasons. He told me this:

well for one, I found out that most asian countries that produce some of it, don't use it for food, they use it as fertilizer lol
2
it's filled with estrogen and can screw with your hormones
and three it's just plain hard on your body
it's ok to have every once in a while, but not a lot.

Admittedly, I don't really know much about the health facts of tofu. I just wanted to figure out how to make it, learned how to make it, and liked it lots. But because this friend of mine also told me that mayonnaise is lard, I'm skeptical about what he says. For EoFF members that know much about tofu, is there much truth in what he says about this?