The study found measurable concentrations of 16 metals in tampons, including arsenic, lead, mercury, nickel, copper, and iron, among others6. The levels of these metals varied depending on factors such as the country of sale, organic or non-organic classification, and brand.
Metals in tampons could have ended up there in several ways, according to the study. The cotton material might have absorbed them from the environment or nearby contaminants2. They could have been added intentionally during the manufacturing process, as part of a pigment, whitener, or an antibacterial agent.
Metal exposure from tampons, including toxic metals like arsenic and lead, has potential health risks such as increased risk of dementia, infertility, diabetes, and cancer. These metals can damage the liver, kidneys, brain, and cardiovascular and nervous systems. The vaginal skin's higher potential for chemical absorption makes this a significant concern for menstruating individuals.