The Listín Diario headline alerts of the declining age of the start of puberty in Dominican girls. The news story highlights that 66% of Dominican girls are showing signs of early puberty. It highlights gynecologists are seeing too many cases of girls eight to 10 years starting to menstruate. Gynecologist Luis de los Santos said this could be traced to the growth hormones fed to chicken and beef used for human consumption. The newspaper mentions that the earlier puberty trend also has occurred in the US where a study showed girls were experiencing menstruation earlier.