Can phthalates a pregnant mom is exposed to change her baby's brain development?
A 2025 Nature Communications study linked prenatal phthalate exposure to newborn blood chemistry changes and infant neurobehavioral outcomes.
What's actually in it
Phthalates are chemicals used to make plastic flexible and to carry scent in some products. During pregnancy, phthalate metabolites can be measured in urine.
Pregnancy is a sensitive window because the baby's brain and hormone systems are developing quickly.
What the research says
A 2025 Nature Communications study measured 8 phthalate metabolites in prenatal urine samples. Samples were collected at 8 to 14 weeks and 24 to 30 weeks of pregnancy.
The study found links between prenatal phthalate exposure, changes in the newborn metabolome, and infant neurobehavioral outcomes. Several confirmed metabolites were tied to tyrosine, tryptophan, thyroxine, and serine pathways.
This does not mean one plastic container causes a brain problem. It does support lowering daily phthalate exposure during pregnancy. Use unscented personal care when possible, avoid heating food in plastic, and move hot leftovers into glass storage jars or containers.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Impact of prenatal phthalate exposure on newborn metabolome and infant neurodevelopment. | Nat Commun | 2025 |