Quote Originally Posted by btchance
I'm not really sure, that's just what I found from numerous sources, and it seems to be the universal values. I don't think that it's a problem to be a little lower than that, it's just not required to be healthy, especially if you're trying to get pregnant. Not completely sure though.
Right. I am not sure in making that link, but I think that fat is closely related to hormones production (oestrogens in particular) (which explains the current surge of breast cancer... in men!! very fat ones, that is), hence the potential problems for a women trying to become pregnant if her body fat gets lower than a certain level.