sentences:  They are an unnecessary and mostly preventable potential hazard to health, which can have a large impact on how individuals gain and lose weight.Bisphenol-A (BPA) is an industrial chemical and organic compound that has been used in the production of plastics and resins for over a half-century.It is used in products such as toys, medical devices, plastic food and beverage containers, shower curtains, dental sealants and compounds, and register receipts.