We often hear about the importance of maintaining a balance of bacteria in the oral cavity and digestive system, but we should not forget the bacteria in the places where we live, work, and study. Recent research shows that bacteria found in homes and enclosed spaces have a significant impact on our health—including our respiratory and immune systems, and even our mental health.
What influences the composition of bacteria in our homes?
The composition of bacteria in our homes depends largely on the individual. Cooking habits, regularity and quality of cleaning, and the presence of pets all affect the bacteria that are prevalent in the home. The design of the home itself also plays a role. The ventilation system, the amount of daylight entering the rooms, and the types of building materials are all factors that can promote or inhibit the growth of certain types of microbes.
The bacteria that live in our homes have both positive and negative effects on our health:
Health experts point out that with continued exposure to certain types of bacteria, the immune system "learns" to distinguish between harmful and harmless microorganisms. This reduces the likelihood of developing allergies and autoimmune diseases (such as asthma, hay fever, eczema, and even multiple sclerosis) in the future. The "trained" immune system also fights more effectively common respiratory illnesses - colds, influenza, and bronchitis.
Of course, not all microorganisms are harmless. Some conditions (such as poor ventilation and humidity) promote the growth of harmful bacteria. Indoor humidity promotes the growth of mold, which can increase the risk of respiratory illnesses and allergies. Poor home ventilation also facilitates the spread of viruses that cause respiratory illnesses, such as colds, influenza, and COVID-19.
Some studies indicate that the frequent use of antibacterial cleaning products to disinfect the home may encourage the growth of bacteria resistant to these products, so it is preferable to clean the kitchen and interior surfaces in the home with regular soap and water.