How Does Asthma Cause Air Pollution
Asthma and air pollution
What is Asthma?
Asthma is a chronic disease that affects the air passages of the lungs. It´s characterized by recurrent attacks of wheezing and loss of breath. These episodes or attacks can happen many times a day, a week or when exposed to certain substances or in specific physical activity.
The World Health Organization estimates that around the world about 300 million people suffer asthma, the majority children. In fact it is consider the most common chronic disease among children. Asthma is not just a public health problem for high income countries: it occurs in all countries regardless of level of development. Over 80% of asthma deaths occurs in low and lower-middle income countries.
During an asthma attack, the lining of the bronchial tubes swell, causing the airways to narrow and reducing the flow of air into and out of the lungs. Recurrent asthma symptoms frequently cause sleeplessness, daytime fatigue, reduced activity levels and school and work absenteeism.
Causes
The exact cause of asthma is not completely understood. The strongest risk factors for developing asthma are a combination of genetic predisposition with environmental exposure to inhaled substances and particles that may provoke allergic reactions or irritate the airways. Triggers often bring on …show more content…
It can cause breathing problems, trigger asthma, reduce lung function and cause lung diseases. Epidemiological studies have shown that symptoms of bronchitis in asthmatic children increase in association with long-term exposure to NO2. Reduced lung function growth is also linked to NO2 at concentrations. SO2 can affect the respiratory system and the functions of the lungs, and causes irritation of the eyes. Inflammation of the respiratory tract causes coughing, mucus secretion, aggravation of asthma and chronic bronchitis and makes people more prone to infections of the respiratory
What is Asthma?
Asthma is a chronic disease that affects the air passages of the lungs. It´s characterized by recurrent attacks of wheezing and loss of breath. These episodes or attacks can happen many times a day, a week or when exposed to certain substances or in specific physical activity.
The World Health Organization estimates that around the world about 300 million people suffer asthma, the majority children. In fact it is consider the most common chronic disease among children. Asthma is not just a public health problem for high income countries: it occurs in all countries regardless of level of development. Over 80% of asthma deaths occurs in low and lower-middle income countries.
During an asthma attack, the lining of the bronchial tubes swell, causing the airways to narrow and reducing the flow of air into and out of the lungs. Recurrent asthma symptoms frequently cause sleeplessness, daytime fatigue, reduced activity levels and school and work absenteeism.
Causes
The exact cause of asthma is not completely understood. The strongest risk factors for developing asthma are a combination of genetic predisposition with environmental exposure to inhaled substances and particles that may provoke allergic reactions or irritate the airways. Triggers often bring on …show more content…
It can cause breathing problems, trigger asthma, reduce lung function and cause lung diseases. Epidemiological studies have shown that symptoms of bronchitis in asthmatic children increase in association with long-term exposure to NO2. Reduced lung function growth is also linked to NO2 at concentrations. SO2 can affect the respiratory system and the functions of the lungs, and causes irritation of the eyes. Inflammation of the respiratory tract causes coughing, mucus secretion, aggravation of asthma and chronic bronchitis and makes people more prone to infections of the respiratory