Courtesy of: Your Rio Vista Chiropractor Dr. Joseph T. Megna Health Alert: Tampons May Possess Lead and Other Harmful Metals. Laboratory tests of 30 tampons from 24 brand product lines revealed lead in all samples in addition to the presence of arsenic, barium, cadmium, and mercury in several. Due to the potential for these metals to enter the bloodstream unfiltered by the liver, the findings suggest a greate...