Can DINP from plastic food containers cause fatty liver disease?

What's actually in it

Diisononyl phthalate (DINP) is a chemical used to make plastic soft and bendable. You'll find it in food storage containers, plastic wrap, vinyl gloves used for food handling, and some takeout packaging. It slowly leaches out of plastic, especially when the container holds hot or fatty food.

DINP belongs to the phthalate family, a group of chemicals known to mess with hormones. It replaced the older phthalate DEHP in many products after DEHP was restricted. But DINP carries its own health concerns.

What the research says

A 2026 study in Environ Toxicol Pharmacol exposed pregnant animals to DINP and tracked what happened in their offspring's livers. The results showed clear signs of hepatic steatosis, or fatty liver disease, in the young animals.

DINP disrupted the way liver cells process and store fat. It activated a pathway called PPAR-gamma, which tells the liver to stockpile fat instead of burning it. At the same time, it slowed down fatty acid oxidation, the process that breaks fat down for energy.

The damage started before birth. Prenatal exposure alone was enough to reprogram how the liver handled fat, even after the chemical exposure stopped. This suggests the effects aren't just temporary.

Fatty liver disease is already rising in children and adults. Cutting DINP exposure is one way to lower the risk. Store food in glass or stainless steel instead of flexible plastic. Don't microwave food in plastic containers, and avoid wrapping fatty foods like cheese or meat in plastic film.