Re:

"My read on low body mass based on genetics is that some does occur, but is most likely due to the composition of vaccinations given at early ages, and mercury in the teeth from dental amalgams, all of which have skewing effects on endocrine levels, liver metabolism, and hormones, and we know well how hormones regulate quantity and location of body fat, visceral, subcutaneous, on hips, thighs, breasts, etc." - vulcanel

Excellent point there.

I am very much different from my siblings. I would like to say my problems began, when I started have teeth fillings. However, I remember pretty far back; and I had problems before that. Now, I do remember that I had very many vaccinations when I was about 9. We lived in Hawaii before it was a State. When we were ready to move back to the continent, "they" would not let us move, unless we had 3 days worth of every imaginable vaccine. My sister should have the same health problems, or at least some health problems, in this case as well. But no. Just me. So many of my symptoms could point to mercury (fungus overgrowth, familial tremor of the hands since puberty). I also remember playing with quicksilver. Come to think of it, my tremor has diminished; since I've started Miracle-Mineral-Supplement which does oxidize mercury. My sister did have to have her thyroid removed. No one else in the entire family had that problem. So, your point seems appropriate. ...even with my rambling.