Are prenatal phthalates changing newborn metabolism?

What's actually in it

Phthalates are a group of chemicals used to make plastics soft and flexible. They are everywhere: in your vinyl flooring, food packaging, and even personal care products. They don't just stay in the plastic. They leach out and get into your body.

When you are pregnant, these chemicals can pass through the placenta. Once inside, they interfere with how your baby's body functions at a chemical level. According to a 2025 study in Nat Commun, these exposures are not harmless. They are actively changing the newborn metabolome, which is the collection of small molecules that control your baby's metabolism and growth.

What the research says

The science is clear that these chemicals have a real impact on early development. A 2025 study in Nat Commun found a direct link between prenatal phthalate exposure and changes in the newborn metabolome. These changes are significant because they are also associated with how an infant develops neurologically.

Furthermore, research shows that these chemicals affect the way a pregnancy develops. A 2026 study in Ecotoxicol Environ Saf examined how exposure to phthalates and bisphenols (another class of hormone-disrupting chemicals) impacts the fetoplacental ratio. This ratio is a key indicator of how well the placenta is supporting the baby. The data confirms that these common pollutants are not just sitting in the environment; they are interacting with the biological systems that build a healthy baby.