Toxins can interfere with female hormones and render strong, health conscious women, infertile. The following links are related to toxins affecting female hormones:
Rachel Carson is the woman who started the modern environmental movement through her entire professional career of monitoring fish and the damage done by pesticides and toxic chemicals. Her book, the Silent Spring started a global awareness of the damage done to the body by pesticides. She died of breast cancer most likely due to her exposure to toxic water where she did her field research.
Her efforts resulted in DDT being banned and we have much to thank due to her meticulous work and her responsibility to a healthy earth.