Can DEHP from plastic food packaging harm a baby boy's reproductive development?

What's actually in it

DEHP (di(2-ethylhexyl) phthalate) is one of the most widely used plastic softeners in the world. It shows up in food packaging, plastic cling wrap, vinyl flooring, and even the tubing used in medical devices. It leaches into food when plastic contacts anything warm, oily, or acidic.

DEHP crosses the placenta easily. A developing baby gets a direct dose of whatever the mother absorbs from food and household products.

What the research says

A 2026 study in Ecotoxicol Environ Saf showed that gestational DEHP exposure impairs testicular development in male offspring. The damage centers on Leydig cells, the cells responsible for producing testosterone in the testes.

DEHP triggered an abnormal immune response inside the developing testes. Macrophages, a type of immune cell, became overactivated and started releasing inflammatory signals that damaged the Leydig cells around them. With fewer healthy Leydig cells, the testes couldn't produce enough testosterone during the critical window when male reproductive organs are forming.

The result was smaller testes, lower testosterone levels, and abnormal sperm cell development. These changes persisted into adulthood in the animal models, suggesting the damage is permanent.

DEHP exposure happens mostly through food. Avoid storing or heating food in soft plastic containers. Use glass or stainless steel instead, especially for warm or fatty foods. Choose fresh meals over heavily packaged processed food to cut your phthalate intake during pregnancy.