Can cooking fumes in your kitchen affect memory and thinking?

What's actually in it

Cooking produces particulate matter: tiny particles that float in the air. Frying, grilling, and stir-frying create the most. These particles are made up of oil droplets, combustion byproducts, and volatile organic compounds. They're small enough to get deep into your lungs, and some are small enough to enter your bloodstream.

What the research says

A 2026 study in Toxics looked at how cooking behaviors and kitchen particulate matter relate to cognitive function. The researchers used both qualitative interviews and air quality measurements. People who cooked more frequently with high-heat methods like frying and who had poor kitchen ventilation scored lower on tests of memory and mental sharpness.

The connection makes sense. Fine particles from cooking are similar in size to outdoor air pollution particles, which have strong links to brain health problems. When you breathe them in daily, they cause low-level inflammation in the body, including the brain.

Good ventilation matters a lot. Using a range hood that vents outside, opening a window, or even using a portable air purifier while cooking can cut your exposure. The study found that cooking habits and kitchen setup together shaped how much particulate matter people actually breathed in.