Premature onset of puberty is becoming more and more common.
The environment plays a huge part in this phenomenon. For example, plastics contain phthalates, which are known as xeno-estrogens. Xeno means foreign. In addition, cows are being injected with bovine Estrogens and bovin growth hormones, which are ingested by kids when they eat beef or drink milk. Pesticides block normal hormones too.