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  • Writer's pictureArnaldo Connonier

How Cockroaches Can Make You Sick: A Clinical Perspective

Selective focus to cockroachs on brown broom. — Photo

Cockroaches, with their nocturnal habits and rapid scuttling movements, are universally dreaded and are unwelcome guests in any setting. But beyond the fear and distaste they elicit, there's a more serious concern associated with these pests: Cockroach health risks. This article delves into the clinical repercussions of having cockroaches in our living spaces and how they can compromise our well-being.

Cockroaches and Disease Transmission: The Basics

Cockroaches are scavengers, consuming a wide array of organic materials, from food remnants to feces. This diet, coupled with their preference for dark, moist environments—often teeming with microbes—makes them perfect vectors for numerous pathogens.

1. Allergic Reactions and Asthma

A significant health concern associated with cockroaches is the potential for allergic reactions. Cockroach feces, shedding body parts, and saliva contain proteins known to trigger allergies in susceptible individuals. These allergens can lead to:

  • Sneezing

  • Runny or stuffy nose

  • Skin rashes

  • Watery eyes

Moreover, there is a strong correlation between cockroach allergens and asthma. Prolonged exposure can exacerbate asthma symptoms and increase the frequency and severity of asthma attacks, especially in children.

2. Gastrointestinal and Urinary Tract Infections

Cockroaches are notorious carriers of various pathogens responsible for gastrointestinal issues. These include E. coli, Salmonella spp., and parasitic amoebas. When they come into contact with food sources or surfaces in our homes, they can contaminate them with these pathogens. Consumption of such contaminated food can lead to:

  • Diarrhea

  • Stomach cramps

  • Nausea and vomiting

  • Urinary tract infections

3. Typhoid Fever, Polio, and Dysentery

More severe illnesses linked with cockroaches include Typhoid fever, Polio, and Dysentery. The bacteria causing these diseases can be transported on the body and in the feces of cockroaches, which can then be transferred to food and surfaces, thereby infecting humans.

4. Skin Infections

It's less common but still noteworthy that bacteria like Staphylococcus aureus and Streptococcus spp., which cause skin infections, have been isolated from cockroaches. Wounds or skin breaks can become infected if contaminated by these bacteria via cockroach contact.

Preventive Measures

Given the considerable health risks associated with cockroach infestations, it's imperative to adopt preventive measures:

  1. Maintain Cleanliness: Regularly clean food crumbs and spills, and ensure food items are stored in sealed containers.

  2. Seal Entry Points: Check for cracks, holes, and other entry points in your home and seal them promptly.

  3. Regular Inspections: Periodically inspect dark and damp areas in your home, as these are preferred hiding spots for cockroaches.

  4. Seek Professional Help: If you suspect an infestation, it's wise to consult pest control professionals to address the problem effectively.


While the sight of a cockroach may be unsettling, the potential health risks they pose are even more concerning. Understanding these risks is the first step to taking action and ensuring that your living environment remains both cockroach and disease-free.

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