Chemical exposure that interferes within the body’s hormone systems has been linked to breast cancer. Large numbers of pollutants can have oestrogen hormone-like activities and can stimulate breast cancer cell growth. Bisphenols are used in the manufacture of plastic bottles, resins and the plastic lining of cans, from which they leach into food and drink. Bisphenol A (BPA) is the prototypical member of this class of plastics components, which is now known to mimic the effects of oestrogen. Due to public concerns, industry has been replacing BPA with other bisphenol compounds to produce so called “BPA-free” products.