Are Tampons A Source of Exposure To Metals?

The answer, according to a 2024 study by researchers at the University of California, Berkeley, is yes. The study revealed measurable levels of toxic metals including lead and arsenic in a variety of popular tampon brands.

The researchers tested 30 tampons across 14 brands and found 12 out of 16 metals they were looking for. Here is the part that really stopped us in our tracks. Lead was present in every single tampon tested. Every single one. And as the researchers noted, there is no safe level of lead exposure. Even tiny amounts can accumulate in the body over time, settling into bones and staying there for decades. It has been linked to neurological issues, kidney problems, cardiovascular disease, reproductive challenges, and developmental concerns. Even low level exposure has been associated with decreased attention, memory problems, and impaired learning in both adults and children.

The researchers also pointed out something that a lot of people do not think about. The vaginal tissue is highly permeable, meaning it can absorb what it comes into contact with far more readily than skin. That changes the conversation around what ingredients and materials are acceptable in menstrual products entirely.

For anyone who wants to read the full study, you can find it here:
https://publichealth.berkeley.edu/articles/spotlight/research/first-study-to-measure-toxic-metals-in-tampons-shows-arsenic-and-lead

What the Study Actually Found

The findings were eye opening and worth understanding clearly. Here is a breakdown of what the researchers discovered:

• Presence of Metals: Testing 30 tampons from 14 brands revealed 12 of 16 metals, including arsenic, lead, cadmium, and mercury.
• All Tampons Affected: Both organic and non-organic varieties contained heavy metals.
• Organic vs. Non-Organic: Non-organic (conventional) tampons tended to have higher lead levels, while organic tampons showed higher arsenic concentrations.
• How Metals Enter Tampons: Likely through manufacturing processes or from environmental sources such as soil, water, or air where cotton or rayon are grown, rather than being intentionally added.
• Absorption Through the Vaginal Lining: The study highlights that the vaginal tissue’s permeability could allow these metals to enter the bloodstream.

What is the Difference Between Conventional and Organic Tampons?

Organic tampons are made from certified organic cotton, which means the cotton was grown without synthetic pesticides and processed without chlorine bleaching, artificial fragrances, or added dyes. They typically have shorter ingredient lists and more transparent labeling, so you actually know what you are using. Conventional tampons, on the other hand, are more likely to include rayon fibers, deodorants, finishing agents, and residues from chemical processing.

While this study showed that organic tampons are not completely free of environmental contaminants, they consistently showed lower levels of several toxic metals, particularly lead. Reducing your overall toxic load matters, and switching to organic is still one of the most practical steps you can take.

At MissD we carry 100% organic cotton tampons because we believe you deserve to know exactly what is going into your body and why it matters.

Your Questions Answered: Tampons, Heavy Metals, and What You Can Do About It

Are organic tampons completely free of heavy metals?

Not entirely, according to the 2024 UC Berkeley study. Both organic and conventional tampons were found to contain measurable levels of metals, likely from environmental sources like soil and water where the cotton is grown. That said, organic tampons consistently showed lower levels of lead compared to conventional options, which is a meaningful difference given that lead has no safe exposure threshold. Choosing organic is still one of the most practical ways to reduce your overall exposure.

How do heavy metals get into tampons in the first place?

The metals found in tampons are not intentionally added. Researchers believe they enter through environmental contamination during the growing and processing of cotton and rayon, including the soil, irrigation water, and air in agricultural areas. This is part of why sourcing and manufacturing transparency matters so much when it comes to menstrual products.

Can metals from tampons actually enter the bloodstream?

This is one of the more alarming aspects of the study. The vaginal lining is highly permeable tissue, meaning it can absorb substances more readily than regular skin. While the study did not measure blood metal levels directly, the researchers noted that the permeability of vaginal tissue raises real concern about the potential for metals to be absorbed into the body over time, particularly with regular long term tampon use.

Should I stop using tampons altogether?

That is a personal decision and one worth having with your healthcare provider if you have specific concerns. What the research does suggest is that switching to organic cotton tampons reduces your exposure to some of the most concerning metals, particularly lead. You might also consider alternating with organic pads or liners on lighter flow days as another way to reduce overall exposure. Our full range of organic cotton options is a good place to start if you are looking to make a switch.

Why is lead exposure particularly concerning for menstrual product users?

Lead is one of the most dangerous heavy metals because there is genuinely no safe level of exposure according to public health standards. It accumulates in the bones over time, replacing calcium, and can remain in the body for decades. Regular monthly tampon use adds up to a significant number of exposures over a lifetime, which is why even trace amounts matter. Lead exposure has been linked to neurological issues, kidney and cardiovascular disease, reproductive health problems, and developmental concerns, making it especially important to minimize wherever possible.

Thank you for being here.
Thank you for honoring your body.
Let’s grow together.
—MissD♥️