Can phthalate exposure from plastic products increase the risk of pregnancy loss?

What's actually in it

Phthalates are in vinyl products, food packaging, personal care products, and scented household items. Pregnant women absorb them through food, skin, and air. These chemicals cross the placenta, exposing both the mother and baby. Since phthalates break down quickly in the body, your level at any moment reflects very recent exposure, and daily contact means constant replenishment.

Pregnancy loss before 20 weeks affects roughly 10-20% of known pregnancies. Placental dysfunction is one of the key mechanisms behind many losses.

What the research says

A 2026 study in Environ Health Perspect examined the link between phthalate mixtures and pregnancy loss using two complementary approaches. First, the researchers analyzed human health data linking urinary phthalate levels to pregnancy outcomes. Then they tested the findings in animal experiments.

The human data showed that exposure to phthalate mixtures, particularly the metabolite MCNP, was linked to a higher rate of pregnancy loss. The animal experiments confirmed the mechanism: phthalates caused placental dysfunction that impaired the organ's ability to sustain the pregnancy.

The placental damage included disrupted blood vessel formation and impaired nutrient transport. A placenta that can't deliver oxygen and nutrients properly puts the pregnancy at risk.

Reducing phthalate exposure during pregnancy means using glass for food storage, going fragrance-free with personal care products, and avoiding soft vinyl products at home.