This came up in a recent Mail Bag segment and we genuinely couldn’t believe it. You think you’re doing the right thing brushing twice a day? Same. And then we learned that 90% of major toothpaste brands tested positive for lead. LEAD. In your toothpaste. Not a reason to stop brushing, but at what point do we stop being surprised every time a “healthy habit” turns out to have a toxin hiding in it? The fluoride conversation is one thing, but this is something else entirely.