About 65%-70% of BPA contributes to polycarbonate plastics infamously used in water bottles and many other consumer products. In addition, 25%-30% of BPA goes toward making epoxy and vinyl resins. Epoxy resins coat the inside of food storage and drink cans to prevent acids in the contents from corroding the metal and spoiling the food or drink.
There is vast, omnipresent exposure to BPA in modern societies, and the health effects are hotly debated. As of early 2022, over 16,000 scientific studies have been conducted on the health effects of BPA. None of them have been conclusive, but scientists have shown that BPA operates as a xenoestrogen and can potentially disrupt the human endocrine system.
These health effects are very weak, and most government agencies have found them below tolerable levels, so there are no widespread bans. However, 12 U.S. states and Washington D.C. have limited restrictions on BPA, including bans on BPA in baby bottles. These restrictions are preventive, but people and governments are wary that BPA may have more unknown health effects.