Free Republic

Bisphenol A is ingested by practically everyone in Canada who eats canned foods or drinks from a can or hard plastic water bottles. Now a controversy is raging over the safety of widespread public exposure to the chemical, which is known to act like a synthetic female sex hormone. At the heart of the intense debate over bisphenol A is that it challenges the main tenet of modern toxicology, the idea that the dose makes the poison, a principle credited to the 15th-century Swiss alchemist Theophrastus Paracelsus.