Can phthalates in plastic affect a baby's brain chemistry?
Prenatal DEHP exposure is worth reducing. This rat study found changes in hippocampus signaling proteins, but it does not prove the same effect from normal baby products in humans.
What the study looked at
A 2026 IBRO Neuroscience Reports study looked at prenatal exposure to DEHP, a phthalate used to soften some plastics. The study used rats, not people.
The researchers found changes in how glutamate-related proteins worked with PTEN in the hippocampus of male offspring. The hippocampus helps with learning and memory. The study also found changes in enzyme activity tied to brain signaling.
What this means
This is not proof that one plastic toy changes a child's brain. It is a caution signal about prenatal DEHP exposure and developing brain pathways.
DEHP is linked with soft PVC plastic, some food-contact materials, and some older or lower-quality plastic items. For babies, the biggest concern is repeated contact with soft plastic items that go in the mouth.
What parents can do
Skip soft PVC toys when you can. Do not heat food in soft plastic. For teethers, toys, and feeding items, choose simple materials from brands that clearly list what the item is made from.
Bottom line
The study supports reducing DEHP exposure during pregnancy and early childhood. Wooden baby toys are one practical swap for plastic toys when they match your child's age and safety needs.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Prenatal exposure to di(2-ethylhexyl) phthalate alters the association of glutamatergic proteins with PTEN in the hippocampus of male rat offspring. | IBRO Neurosci Rep | 2026 |
What to use instead
For playtime swaps, browse wooden baby toys instead of soft plastic toys when age-appropriate.
Shop Non-Toxic Baby