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Toward A Geography Of Hormones: The Human Sex Ratio At Birth In The United States 1970-1995, Michael C. Meyers
Toward A Geography Of Hormones: The Human Sex Ratio At Birth In The United States 1970-1995, Michael C. Meyers
Masters Theses
It has been hypothesized that humans may exert facultative, adaptive control over their sex of their offspring through the action of the endocrine system. No conclusive evidence of this has been found, although varying hormonal levels in parents at the time of conception may partly influence the sex of the child (James 1986, 1987b, 1999). A decline in the human sex ratio at birth (SRB) observed in the U.S. and some other countries has been attributed by some investigators to widespread environmental exposure to endocrine disrupting chemicals.
The many factors hypothesized to influence the SRB make testing this attribution difficult, …