Are there cockroaches in your house? Scientists have a warning for your lungs

Scientists found that more cockroaches led to higher levels of pollutants in home (Picture Credit: Canva)

Are you among those who are frightened at the sight of a cockroach scurrying under the table? Here’s more to the scare, study reveals that these insects are far more dangerous than you know. According to new research from North Carolina State University, homes infested with cockroaches don’t just have a pest problem, they also have a serious air pollution problem.

The scientists discovered that the more cockroaches there were, the higher the levels of two nasty pollutants in household dust, allergens and endotoxins. Endotoxins are tiny fragments of bacteria that can trigger asthma and allergic reactions when inhaled. And where do they come from? Cockroach droppings.

Because cockroaches eat just about anything, they carry a wide range of bacteria in their guts. When they digest food and leave behind faeces, those bacteria release endotoxins into the environment. The study even found that female cockroaches shed about twice as much as males, mainly because they eat more. Kitchens, full of crumbs and food residues, turned out to be the worst hotspots.

Also read: AI is competing with humans in THIS area too; We bet you won't be able to guess

The research team examined several apartment buildings in Raleigh, North Carolina. Here’s what they did:

Collected dust samples from both the air and surfaces before any treatment began.

Compared homes with cockroach infestations to pest-free ones.

Monitored changes after extermination efforts over three and six months.

The results were scary. Flats that remained untreated stayed full of allergens and endotoxins, while those where exterminators successfully eliminated the roaches saw dramatic drops in both.

“Endotoxins are bad news for anyone with asthma or allergies,” explained Professor Coby Schal, who led the research. “When you eliminate cockroaches, you eliminate their allergens too.” Even small numbers of surviving roaches can continue to pollute the air, which is why complete extermination is key.

His colleague, Dr Madhavi Kakumanu, added that allergens and toxins don’t just linger on surfaces — they can float in the air, where we breathe them in without even realising it.

The researchers now want to study how these cockroach pollutants affect asthma more directly, using animal models to understand how allergens and endotoxins interact. Their work underscores a simple truth: pest control isn’t just about cleanliness or comfort, it’s about protecting your lungs.

Also read: Sleeping for less than 6 hours every night? Doctors have a warning that you must not ignore

Disclaimer: This article, including health and fitness advice, only provides generic information. Don’t treat it as a substitute for qualified medical opinion. Always consult a specialist for specific health diagnosis.