It is absolutely ridiculous to assume that the ”disease” of obesity CAUSES the early onset of puberty. Plain and simple, the more fat a young girl can retain on her body, the better her physical chances are at forming child-bearing equipment. A healthy, but perhaps plump/chubby girl is far more fit to bear children than a naturally skinny or malnutritioned child. The only thing that is needed to cause an ”early” onset of child-bearing capabilities is that little extra meat/fatty tissues, NOT obesity in itself. A child does not have to be obese to get her period at 8 or 9 years of age.