Alarming new research has found that toothpastes are often contaminated with lead and other heavy metals. In tests conducted ... including hydroxyapatite, calcium carbonate and bentonite clay ...

According to Rubin, the contamination likely stems from specific ingredients used in toothpaste formulations, such as hydroxyapatite, calcium ... be free of lead and other heavy metals.

Those tests found toxic heavy metals including lead, arsenic, cadmium and chromium, which can accumulate in the environment and pose risks to humans and wildlife, according to federal and state ...