Can plastic softeners DEHP and DiNP in food containers affect heart health?
Possibly. Acute DEHP and DiNP exposure impacts cardiovascular markers in human and animal studies.
What's actually in it
DEHP and DiNP (diisononyl phthalate) are plasticizers used to soften PVC plastic. They're in food packaging films, vinyl flooring, shower curtains, and medical tubing. Both migrate from plastic into food, especially fatty foods, and into the air from PVC materials in the home.
The heart depends on precise electrical signals and calcium movement to maintain its rhythm. Phthalates interfere with calcium channels, which are critical to cardiac muscle function.
What the research says
A 2026 study in Toxicol Sci measured cardiovascular effects of acute DEHP and DiNP exposure. Both chemicals caused measurable impacts on cardiovascular function including effects on heart rate, contractility, and calcium signaling in cardiac cells. The effects occurred at exposures within the range people typically experience from food contact materials.
Epidemiological studies have also linked higher urinary phthalate levels to increased cardiovascular disease risk in humans, suggesting this isn't just an animal-study concern.
Cutting PVC food contact cuts DEHP and DiNP exposure. Glass food storage contains no PVC and no phthalate plasticizers.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Acute exposure to diethylhexyl phthalate (DEHP) and diisononyl phthalate (DiNP) impacts cardiovascular function | Toxicol Sci | 2026 |
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