Read the full story in Popular Science.
If you’re someone who menstruates, you might reasonably assume that the products you use to deal with your period aren’t actively bad for your health. Unfortunately, that’s not necessarily the case; a number of studies have found surprising chemicals (not all of which are necessarily harmful, but many of which have not been studied in relation to vaginal health) in pads, tampons, and cups.
The latest menstrual product to come under scrutiny is period underwear. On January 7, journalist Jessian Choy reported in Sierra that a nuclear scientist had found a group of chemicals called PFAS in several pairs of Thinx period underwear she mailed to him for testing.