Bisphenol A (BPA) belongs to the group of diphenylmethane derivatives and Bisphenols. BPA was first synthesized in 1881 and is primarily used as a monomer in the manufacture of polycarbonates, a high performance transparent, rigid plastic. At present two kinds of BPA based plastics are available in the market, one is Polycarbonate (PC) and the other one is Epoxy Resins (ERs). The former is used generally in baby feeding bottles, dental sealants, tooth coatings, carbonless papers and plastic toys while the latter is used as protective coatings for food and beverages container, bonding and adhesives, flooring, paving and construction, composites, electrical and electronic laminates, embedding and tooling, vinyl ester resins and other. The surface lining of the food containers accounted for about 50% of all ER consumption.
Though developed as a synthetic estrogen, BPA was initially considered to be a weak environmental estrogen, however, recent studies have demonstrated that it has a potential to cause serious health disorders. BPA is one of the chemicals designated as an Endocrine Disrupting Chemical. Research studies have found that BPA interact with a number of systems in the body inclusive of those regulated by female hormone, estrogen and by thyroid hormones. Pregnant women and children are most susceptible to its exposure. BPA can impact the fetus developing inside the mother’s womb thereby affecting the developing brain and subsequent behavior of the child.
Several research studies have also proved that BPA exposure in any form is harmful to health. A recent experiment (2015) on BPA leaching from plastics indicated the presence of BPA in boiled water attenuates the protective cardio respiratory reflexes and also produces histopathological changes in the lungs of the rats. In an experiment study (2014), BPA migrates from PC baby feeding bottles on an average value 19 ng/ml to hot water at 70⁰C.
In India, the need of the hour is to create scientific data linking the impact of chemicals in baby care products with human health and environment. It is required to generate awareness on negative impacts of BPA used in these products. Efforts have been taken in order to phase out the use of such harmful chemicals from the products. Likewise, the Bureau of Indian Standards has recently banned the use of BPA in manufacturing baby feeding bottles. However, there is no standard defined for the Tolerable Daily Intake (TDI) of BPA in human beings in India while FDA (EPA), Australia, China and Korean Food Safety Authority have defined TDI as 50 µg/kg bw/day while European Food Safety Authority has lowered the value to 4 µg/kg bw/day which is 12 times lower than the previous level.
Countries across the globe have voluntary phased out BPA from the products and emphasis has been made to make the children’s product BPA free as far as possible.
With these views, Toxics Link has taken up the BPA Campaign in an effort to eliminate this Endocrine Disrupting Chemical from the consumer products in India.