Much is known about the impact of these chemicals on male fertility, but little research has looked into how they affect women
, which refers to the number of children needed per woman to keep a population stable.
these don’t fully explain decreasing birth rates. Some research also indicates that decreasing fertility is a major contributing factor in this decline. Though these chemicals have since been banned, they were once used in household products like flame retardants and mosquito sprays, and are still present in the environment and in foods like fatty fish.We measured the levels of 31 common industrial chemicals, such as HCB and DDT , in the blood of 60 women. To gauge their fertility, we measured the number of immature eggs they had in their ovaries by counting them in ovarian tissue samples using a microscope.
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