Breath

Common respiratory diseases

Chronic obstructive pulmonary disease (COPD)
Chronic obstructive pulmonary disease (COPD)

Smokers are most often affected by this disease. The risk factor is related to the number of cigarettes smoked each day.

Asthma
Asthma

Asthma affects about 300 million people in the world and more than 22 million in the US, including about six million children.

Lung cancer
Lung cancer

Cigarette smoking is the most important cause of lung cancer. Other causes are passive smoking, air pollution, asbestos exposure, and lung diseases like tuberculosis and chronic obstructive pulmonary disease (COPD).

Pneumonia
Pneumonia

Pneumonia is an infection of the lungs that is caused by bacteria, viruses, fungi, or parasites. In the US, more than three million people develop pneumonia each year, and about 5% succumb to the condition.

Pulmonary tuberculosis (TB)
Pulmonary tuberculosis (TB)

Pulmonary tuberculosis (TB) is a contagious bacterial infection that involves the lungs, but may spread to other organs. You can get TB by breathing in air droplets from a cough or sneeze of an infected person.

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