 So the conclusion is that tampon use is a potential source of metal exposure. And the research has detected all 16 metals in at least one sample tampon, including some toxic metals like lead that has, quote, no safe exposure level. In other words, you could say, well, the very, very low levels. There's no safe level for lead. You just do not want to introduce lead anyway, anyhow into your body. They say the future research is needed.