Do Phthalates in Pregnancy Affect Baby Lungs and Asthma?

Your baby's lungs are developing right now using the environment you provide. A 2026 meta-analysis of 3,745 mother-child pairs found that fetal exposure to phthalates—chemicals found in everything from vinyl flooring to personal care products—is linked to measurable changes in lung function during childhood.

The study, published in Environmental International, identified that higher maternal pregnancy concentrations of specific metabolites, including mono-n-butyl phthalate and low-molecular-weight phthalates, were associated with altered lung function z-scores in children by school age. While the researchers noted that the link to asthma requires further study, the evidence of developmental lung adaptations caused by these common chemicals is a clear signal to minimize exposure.

You cannot avoid every chemical in the world, but you can control what comes into your home. Start by ditching plastic food storage and synthetic fragrances, which are primary sources of phthalate exposure. Swapping out conventional gear for safer, tested materials is the most effective way to reduce your family's chemical load. We have curated a list of non-toxic baby alternatives that are free from the materials linked to these developmental concerns. Take it one room at a time.

Source: Karramass T, Duijts L, Avraam D, Blaauwendraad S, Carrasco P (2026). Environ Int.