On 30th October 2017, in journal club meeting the topic, “PCOS and environmental toxicants”, was discussed.  There is a close association between exposure to environmental toxicants and onset of polycystic ovarian syndrome in women. Environmental chemicals such as bisphenol A (BPA), phthalates, dioxins, pesticides, air pollution, fracking chemicals, triclosan, and parabens may affect fertility parameters in women. Although many studies reported that the selected exposures are associated with adverse fertility outcomes, several studies reported null associations. Still, future studies are needed to better elucidate the associations and potential mechanisms between these environmental chemicals and fertility outcomes in women.