I'll give you one guess what some suggest it is linked to.
Yup. Seems the issues run higher in 'industrialized' nations, and for instance in "Chemical Alley," a place in Canada right next to a petrochemicals plant. Go figure.
They have been studying the decline in the birth of male children in the Aamjiwnaang First Nation community located next to the infamous Chemical Valley, Canada's largest concentration of petrochemical plants, near Sarnia.
A paper co-authored by Keith and published three years ago in the U.S. journal Environmental Health Perspectives suggests that exposure to various chemicals produced by industrial plants surrounding the Aamjiwnaang reserve land may be skewing the community's sex ratio.
Read all about it here. This gave me serious pause this morning.