My mother was telling me earlier this week about hearing a claim about mouthwashes like Listerine causing mouth cancer and that she, recommended I chuck away the huge Listerine bottle I bought a couple months before this news came about.
So I did a little reading about the claim:
Historical Pondering
The diluted version of Listerine (which is what we use today) was produced somewhere in the late 1800's and was marketted as a cure for chronic halitosis (or known in simple english as extremely bad breath). Before this - the idea and its applications was used as a surgical antiseptic of medical tools and hygenic methods in the medical industry during the late 19th century.
"Listerine", the diluted antiseptic mouthwash - was named in honour of Dr. Joseph Lister (known as the founder/father of antiseptics). He didn't manufacture the product, it was only named after him for he was well known in the medical field - specializing in antiseptics. The powers of marketing...
After reading this - it becomes a little surprise that it was designed not for the mouth, but for medical instruments to avoid germs and bacteria that causes surgical infections... of course the Listerine for the mouth is diluted to chemical concentrations which are within "safe" levels.