In the average human being, dozens of toxins have been identified through "body burden" analysis of samples of blood, the umbilical cord, the placenta, breast milk, urine, hair, sperm and fatty tissue, even among people who live in isolated regions of the worl (COPHES 2012, CDC 2009, Schuiling 2005). While many chemicals pose a constant risk, for both women and men there may be particular windows of susceptibility, especially during infancy and puberty and, for women, during pregnancy, when the impacts of chemical exposures can have critical health effects (WHO 2014, Kortenkamp etal. In men subfertile sperm counts are increasingly common, testicular cancer increased 400% over the last 50 years in industrialized countries and, by the early 2000s, was the most common cancer in men between 20 and 45 years old (WHO and UNEP 2013, Richiardi etal.