BPA, which is found in many types of plastics like baby bottles and water bottles, are endocrine disruptors. Your endocrine system is responsible for hormones like testosterone and estrogen. When you drink out of a baby bottle BPA gets into your system and disrupts your endocrine system. However when you ingest it and pee it out it goes into the water system causing

Male frogs with testes that create sperm (male reproductive cell) .

Male frogs with testes that create eggs (female reproductive cell).

This is because BPA disrupts the hormonal balance in their bodies, leading to abnormal development of their reproductive systems. This phenomenon is known as feminization of male frogs. It is a concerning issue as frogs are an important part of the food chain and their decline can have cascading effects on ecosystems. It also highlights the potential risks of BPA exposure to other wildlife and humans.