Lung diseases affect the airways, which are formed by the windpipe and bronchi. Common diseases include asthma, chronic obstructive pulmonary disease (COPD), chronic bronchitis, emphysema, acute bronchitis, and cystic fibrosis. Asthma causes inflammation, wheezing, and shortness of breath, while COPD causes difficulty exhaling, chronic bronchitis, and emphysema. Emphysema, pulmonary edema, lung cancer, acute respiratory distress syndrome (ARDS), and pneumonia are all conditions affecting the lungs. Emphysema occurs when alveoli are damaged, while pulmonary edema results from fluid leaks from small blood vessels. Lung cancer is most common in the main lung area, while ARDS is a severe injury from a serious illness, often requiring ventilator assistance. Pneumoconiosis is caused by inhaling harmful substances, such as coal dust and asbestos dust. Lung diseases are prevalent worldwide, affecting millions in the US. Common causes include smoking, infections, and genetics. Lungs are part of a complex system that expands and relaxes daily, causing problems.
Lung disease encompasses various disorders that impair lungs' function, affecting respiratory function and pulmonary function. These diseases can be caused by bacterial, viral, or fungal infections, as well as environmental factors like asthma, mesothelioma, and lung cancer. Chronic lower respiratory diseases, including COPD, emphysema, and chronic bronchitis, are a leading cause of death in the US. Lung cancer, caused by abnormal cell growth, can start in the lungs or spread to other parts of the body. Cigarette smoking is the leading cause, while secondhand smoke can increase the risk. Environmental factors like asbestos, radon gas, air pollution, and chemicals like uranium, beryllium, vinyl chloride, and arsenic are also linked to lung disease.Long term exposure to air pollutants can affect lung development and increase the risk of developing respiratory diseases like asthma and emphysema. The NI EHS supported Harvard Six Cities Study found a strong association between ozone, fine particles, and sulfur dioxide with breathing problems, reduced lung capacity, and early death. NI EHS supported the development of a three-dimensional lung-on-a-chip model to test environmental exposures and drug safety. Over 50 genetic changes have been identified that affect pulmonary disorders in people of European, African, Asian, and Hispanic descent. These changes could influence the development of drugs to treat lung function problems. Air pollution can lead to COPD, lung cancer treatment, and mold exposure, with cholesterol acid identified as a novel biomarker for acute respiratory distress syndrome (ARDS). Two NI EHS funded studies show a link between air pollution and asthma, with decreased levels resulting in improved lung function and reduced asthma symptoms. These findings highlight the importance of air pollution reduction policies and strategies for improved air quality and health. Lungs are crucial for the respiratory system, absorbing oxygen from the air and pumping it through the body's airways and air sacs. There are three main categories of lung diseases: airway diseases, lung tissue diseases, and lung circulation diseases. Common lung diseases include asthma, chronic obstructive pulmonary disease (COPD), bronchiectasis, bronchitis, pulmonary fibrosis, sarcoidosis, hypertension, lung cancer, pneumonia, pulmonary edema, pulmonary embolus, and influenza. Lung diseases are classified based on their impact on the lungs, but complex organs may involve multiple categories.
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