New study from UC Berkeley has found that tampons contain toxic metals, including lead and arsenic.

A recent study by UC Berkeley has discovered that many off-the-shelf tampons contain toxic metals, including lead and arsenic. Published in the *Environmental International* journal, the findings highlight the need for strict regulatory measures to mandate metal testing in menstrual products.

Researchers warn that the higher absorption rate of vaginal skin increases the risk of chemical exposure for millions of women using these products. Lead author Jenni A. Shearston from the UC Berkeley School of Public Health stated, “Despite this large potential for public health concern, very little research has been done to measure chemicals in tampons. To our knowledge, this is the first paper to measure metals in tampons.”

The study analyzed 30 tampons from 14 brands, testing for 16 metals, including arsenic, cadmium, chromium, lead, and vanadium. Lead was found in all samples, with varying levels of other metals. Zinc and calcium were found in the highest concentrations, while arsenic had the lowest. The presence of these metals, particularly lead, which has no safe exposure level, raises serious health concerns.

Chronic exposure to these metals is linked to severe health issues such as dementia, infertility, diabetes, and various cancers. The study did not specify the brands tested, and representatives from major tampon brands did not respond to requests for comment.

The researchers hope this study raises awareness and leads to stricter safety standards for menstrual products. “I hope manufacturers are required to test their products for metals, especially for toxic metals,” Shearston emphasized. “It would be exciting to see the public call for this or ask for better labeling on tampons and other menstrual products.”