Tai sitten naisten on lopetettava estron syytäminen ympäristöön. Israelissa on tehty tutkimus, jossa miesten sperman laatu on heikentynyt 40% vuosikymmenessä.
"I would suggest that a concentration of estrogen in the water is a cause of change, Haimov-Kokhman says, noting that hormones in the ground come from both human and animal waste that reach the aquifer via sewage. "The ground is full of estrogen that produces estrogen-saturated fruits, vegetables and plants."
Syy on siis löydetty. Lopullisesti.
"A study published in Israel two years ago revealed that the high level of female hormones in a stream near Beit She'an, apparently originating from women swimmers who were taking birth-control pills, caused fish to develop female characteristics."