Most Helpful Guy
Research constantly flags up the link between BMI (Body Mass Index, used to indicate if an individual is overweight or obese) and puberty. But there is more to it than that.
For example, one study found that children who had been adopted recently from a developing county to Denmark were 10 to 20 times more likely to develop precocious puberty than children in the developed country. The study also found that the difference could not be explained entirely by changes in nutrition, body weight, or body fat. Similar findings were found in studies of children immigrating to Sweden, France, Belgium, Switzerland and the United States.
Other factors that can influence biology relate to a child's environment - stress, climate, light cycles and chemical exposures all have established links, though their magnitude is still not entirely understood."0
Most Helpful Girl
i guess its due to hormones in food0