Endocrine disrupting chemicals are ubiquitous environmental chemicals that influence the action of hormones. They may alter the expression, action, carriage within the blood, down-stream action, excretion and metabolism of hormones and consequently may have long term consequences. They gain access to the body through swallowing, breathing, through the skin, in breast milk and via the placenta. This talk will focus on prenatal exposures to endocrine disrupting chemicals that may lead to an influence on adult health, with a focus on my work in the field of reproduction.