In the last several years, a growing body of scientific evidence has indicated that the air within our homes contains more pollutants than the outdoor air in even the largest and most industrialized cities.Other research indicates that people spend approximately 90% of their time indoors. Thus, for many people, the risks to health may be greater due to exposure to air pollution indoors than outdoors.
Sources that emit gases or particles into the air are the primary cause of IAQ problems in homes. Poor ventilation can increase levels of these pollutant levels by not directing them outside and by not bringing in enough “fresh” outdoor air to dilute indoor pollutants. High temperature and humidity can also play a role.
Indoor air pollutants can cause a variety of health problems including irritation of the eyes, nose, and throat, headaches, dizziness, fatigue,asthma,and even eventually respiratory disease, cancer, and heart disease. The young, the elderly, and the chronically ill, especially those suffering from respiratory or cardiovascular disease, are most susceptible to the effects of poor indoor air quality.
Even if your family doesn’t have noticeable symptoms, you should think about improving the air in your home: