Can paraben exposure in early pregnancy link to cord blood DNA methylation?
A 2026 cohort study found early-pregnancy paraben levels were associated with altered DNA methylation in cord blood. It did not prove disease or permanent harm.
What is actually in it
Parabens are preservatives used in some cosmetics and personal care products. Common names include methylparaben, ethylparaben, propylparaben, butylparaben, and isobutylparaben.
Pregnancy is a sensitive window. Researchers study parabens because they are endocrine-disrupting chemicals and many people use personal care products every day.
What the research says
A 2026 study in Environ Int looked at 328 mother-child pairs in the Finnish PREDO cohort.
The researchers measured metabolites of 6 parabens in early-pregnancy urine and measured genome-wide DNA methylation in cord blood. Every mother in the cohort had paraben exposure.
After correction for multiple testing, parabens were associated with hypomethylation at 4 CpG sites. The study also found 52 CpG sites associated at a suggestive level. Butylparaben and isobutylparaben were also linked with differentially methylated regions within PF4 and ABAT.
This is an association study. It does not prove that parabens cause illness in a child. A practical step is to check personal care labels during pregnancy and choose products without methyl-, ethyl-, propyl-, or butylparaben when it is easy.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Maternal paraben exposure during early pregnancy is associated with altered cord blood DNA methylation: The PREDO cohort. | Environ Int | 2026 |