Can prenatal phthalate and bisphenol exposure cause different types of allergies — food, skin, and airway — in the same child?

What's actually in it

Phthalates and bisphenols are in food packaging, personal care products, fragrances, and plastics. Pregnant women are continuously exposed. These chemicals cross the placenta and reach the developing fetus, where they can affect how the immune system is programmed.

Allergic disease in children — eczema, food allergy, asthma, hay fever — has been rising for decades. Immune programming during fetal development partly determines who gets which allergies.

What the research says

A 2026 study in Environ Pollut analyzed data from two independent birth cohort studies and examined whether prenatal phthalate and bisphenol exposure was linked to specific allergic phenotypes in children. The study found associations across multiple allergy types — not just one. Children with higher prenatal plastic chemical exposure had higher rates of food allergies, eczema (atopic dermatitis), AND airway allergies.

Using two independent cohorts strengthens the evidence. The finding that one prenatal exposure raises risk across different allergy types suggests these chemicals affect fundamental immune programming, not just a single pathway.

During pregnancy, reduce plastic food packaging, fragrance-containing products, and vinyl products. Use phthalate-free personal care. See non-toxic baby products for pregnancy-safe alternatives.