Can prenatal DEHP exposure affect baby boys?

What is actually in it

DEHP means di(2-ethylhexyl) phthalate. It is a plastic softener used in some flexible plastics, vinyl, and food-contact materials. Its breakdown product, MEHP, is often studied because it is active in the body.

Food can be one exposure route for phthalates, especially when oily or warm food touches soft plastic. That is why plastic food contact matters during pregnancy.

What the research says

A 2026 Ecotoxicology and Environmental Safety study tested prenatal DEHP exposure in mice. Male offspring had more cryptorchidism, lower testosterone production, fewer Leydig cells, and impaired spermatogenesis.

The study focused on a pathway called the Trem2-Mical1-Erk axis. In plain language, DEHP exposure changed how testicular immune cells and testosterone-making Leydig cells talked to each other.

This is animal evidence. It does not prove that one plastic package harms one baby. It does support a careful pregnancy habit: reduce soft plastic food contact when the swap is easy. Use glass for leftovers, avoid heating food in plastic, and keep warm or fatty foods out of soft plastic wrap.