Can cutting ultra-processed food lower some food-contact chemicals?

What is actually in it

Ultra-processed foods often come through more processing steps and more packaging than simple foods. That can add exposure to food-contact chemicals and processing by-products.

The goal is not a perfect diet. The useful move is replacing a few packaged meals or snacks with simple foods when that fits your week.

What the research says

A 2026 Journal of Nutrition pilot study compared a high ultra-processed diet with a diet free of ultra-processed foods for 6 weeks in adults ages 40 to 65.

The study chemically checked the diets and measured health markers. It found that the non-ultra-processed food group had reductions in 2,4-ditert-butylphenol, a food-contact chemical, and N6-carboxymethyllysine, a thermal processing by-product.

This was a small proof-of-concept study, not a guarantee that every chemical drops for every person. It supports a practical kitchen habit: cook simple meals when you can and store leftovers in glass instead of more disposable packaging.