For a while now it has been known that some dental floss, such as Oral-B Glide, contain harmful chemical compounds called PFAS (per- and polyfluoroalkyl substances), similar to Teflon. These chemicals have all sorts of negative health effects, and are referred to as "forever chemicals" because they stick around.
A recent investigation by ehn.org (Environmental Health News) and Mamavation (a health/wellness site) tested 39 different brands of dental floss for PFAS by an EPA-certified laboratory. They found evidence of PFAS in one third of the samples, with levels ranging from 11 parts per million (ppm) to 248,900 ppm. Yup, it was Oral-B Glide with the incredibly high levels of PFAS.
These PFAS chemical compounds are linked to all sorts of health problems (e.g. kidney and testicular cancer, semen quality, thyroid disease, immune system effects, reproductive problems, and lowered sex and growth hormones in children) - so you want to avoid them if possible.
It turns out these chemicals are shed into the person's mouth when flossing if the floss contains PFAS, and can be measured in a person's blood.
The four floss brands with extremely high levels (over 70,000 ppm) were: Oral B Glide, Up & Up (Target brand) Smooth Slide Floss, Colgate Total Waxed Dental Floss, and Solimo (Amazon brand) Extra Comfort Dental Floss.
One piece of good news: No dental (tooth) floss marketed to children that they tested had indications of PFAS forever chemicals.
Bottom line: avoid non-stick smooth dental floss such as Oral-B Glide dental floss (or when the dental floss label brags that it is similar to Glide dental floss). Use plain waxed or unwaxed floss instead (e.g., Reach Waxed Floss, Tom's of Maine Floss). Look at the investigation results for brands to avoid and better choices.
From Environmental Health News (EHN.org): Tests find PFAS abundant in some dental floss
That nice waxy glide as you floss your teeth? Turns out it could be courtesy of PFAS, the "forever chemicals" that hijacks hormones and is linked to reproductive problems, birth defects, testicular cancer and a host of other diseases.
...continue reading "Some Dental Floss Brands Contain Harmful PFAS Chemicals"