Can parabens in baby lotion mess with a young child's appetite hormones?
A 2025 ENVIRONAGE study linked propylparaben exposure in preschool children to higher leptin, a satiety hormone. It did not prove lotion causes weight gain.
What's actually in it
Parabens are preservatives used in some lotions, shampoos, soaps, wipes, and sunscreens. Common names include methylparaben, ethylparaben, propylparaben, and butylparaben.
This study was not a baby lotion trial. It looked at preschool children ages 4 to 6, then compared paraben levels in urine with satiety hormones in blood.
What the research says
A 2025 ENVIRONAGE study in Environmental Research measured parabens and satiety hormones in 188 preschool children. A doubling in propylparaben was associated with a 5.34% increase in leptin.
Leptin helps tell the body it has enough energy. This does not prove that baby lotion causes weight gain. The researchers said longer studies are needed.
The practical step is simple: read baby care labels and skip ingredients ending in -paraben, especially in products used often. Start with soap, lotion, wipes, and shampoo.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Paraben exposures and satiety hormones in preschool children: an ENVIRONAGE study. | Environ Res | 2025 |