Why does everything turn out to be bad for you?  A new study claims there could be toxic chemicals in your dental floss. The new report found that women using Oral-B Glide or similar brands of dental floss could have higher levels of a toxic PFAS chemicals in their bodies. The chemical is often used for water-resistant or grease-resistant surfaces.  Stain-resistant carpets and coated cardboard food containers can also lead to higher PFAS levels.