Parabens Show Up in Umbilical Cord Blood
NonToxCo Research
Science & Safety Team · 5/5/2026
Parabens were found in the umbilical cord blood of 88% of newborns tested in a 2026 study. That means these preservatives — from your lotion, shampoo, and face wash — are crossing the placenta and reaching your baby before birth.
What's actually in it
Parabens are preservatives in almost every conventional personal care product. Methylparaben, ethylparaben, propylparaben — if a product has a long shelf life, it probably has at least one of them. They're cheap and effective at stopping mold and bacteria.
The problem: parabens mimic estrogen in the body. They're classified as endocrine disruptors. And they absorb through skin, enter your bloodstream, and — as this study shows — cross the placenta into your baby.
What the research says
A 2026 study in Ann Endocrinol recruited 154 pregnant women and measured paraben levels in their umbilical cord blood immediately after delivery. The mean concentration of methylparaben was 1,420 ng/mL. Ethylparaben was at 1,193 ng/mL. Propylparaben at 1,402 ng/mL.
Researchers also measured the babies' reproductive hormones: LH, FSH, testosterone, estradiol, progesterone, and prolactin. Higher paraben levels in cord blood were linked to measurably altered hormone levels — specifically the hormones that control puberty and fertility later in life.
Check your labels before the next bottle you buy. Look for anything ending in "-paraben" and leave it on the shelf. See non-toxic baby products for paraben-free personal care.
Also see glass food storage for safer alternatives.