Can paraben preservatives in cosmetics increase your breast cancer risk?
Some Concern
What's actually in it
Parabens (methylparaben, propylparaben, butylparaben) are preservatives found in moisturizers, shampoos, makeup, sunscreen, and deodorant. They prevent bacterial growth but also mimic estrogen. Applied to skin near breast tissue, parabens can be absorbed and accumulate locally.
What the research says
A 2026 study in Ecotoxicol Environ Saf combined epidemiological data, network toxicology, multi-omics analysis, and experiments to investigate the link between parabens and breast cancer. The study found an association between paraben exposure and breast cancer risk. Parabens activated estrogen-driven pathways that promote breast cell growth.
The study showed that parabens may work through epigenetic changes, flipping gene switches that control cell growth. These changes can build up over years of daily product use.
Switch to paraben-free personal care products. Check ingredient lists for methylparaben, propylparaben, butylparaben, and ethylparaben. Apply deodorant and lotion away from breast tissue when possible.
The research at a glance
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