Columbia University study reveals high zinc levels in tampon products raise health concerns

July 01, 2025 | California State Assembly, House, Legislative, California


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Columbia University study reveals high zinc levels in tampon products raise health concerns
During a recent meeting of the Assembly Environmental Safety and Toxic Materials Committee, significant concerns were raised regarding the presence of certain metals in consumer products, particularly those used in feminine hygiene items. The discussion highlighted the alarming concentrations of metals such as zinc, which were found at levels significantly exceeding safety thresholds.

Committee members questioned the specific forms of these metals, emphasizing the importance of understanding whether they are soluble or insoluble. This distinction is crucial as it affects how these substances interact with the human body and the environment. For instance, zinc was noted to be present in tampon products at an average concentration of 52,000 nanograms per gram, which is approximately ten times higher than levels shown to cause harm in laboratory studies.

The committee's inquiry into the types of compounds present in these products reflects a growing concern for public health and safety. The discussions underscored the need for further research to determine the potential risks associated with these metals, particularly in terms of their leachability and long-term effects on human health.

In addition to the focus on zinc, the committee acknowledged the presence of other metals of concern, although specific details were not fully explored during the meeting. The emphasis on these findings signals a proactive approach by the committee to address potential hazards in consumer products and protect the health of California residents.

As the committee continues its work, the implications of these discussions may lead to further regulatory actions aimed at ensuring the safety of products used by the public. The outcomes of this meeting could pave the way for more stringent testing and labeling requirements, ultimately enhancing consumer awareness and safety.

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