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Healthy Lifestyle

How the Lungs Work

Your lungs are the pair of spongy, pinkish-gray organs in your chest. They help get oxygen into your blood and carbon dioxide, a waste gas, out of your blood. 


Hypersensitivity Pneumonitis

Hypersensitivity pneumonitis is a rare immune system disorder that affects the lungs and makes it hard to breathe.



Idiopathic Pulmonary Fibrosis

Idiopathic pulmonary fibrosis (IPF) is a serious long-term disease that happens when the tissue surrounding the air sacs, or alveoli, in the lungs becomes thick and stiff for unknown reasons. 


Immune Thrombocytopenia (ITP)

Immune thrombocytopenia (ITP) is a platelet disorder that occurs when the number of platelets in your blood is too low. This can prevent your blood from clotting after an injury or surgery, making it hard to stop bleeding.



Insomnia is a common sleep disorderthat causes you tohave trouble falling asleep, staying asleep, or getting good quality sleep.


Interstitial Lung Diseases

Interstitial lung diseases (ILDs) are a group of more than 200 different disorders that cause scarring in the lungs and make it hard to breathe.


Iron-Deficiency Anemia

Iron-deficiency anemia is a condition in which the body can't make enough healthy red blood cells because it doesn't have enough iron. It is the most common type of anemia.




LAM, or lymphangioleiomyomatosis, is a rare lung disease in which abnormal cells begin to grow out of control in the lungs. Over time, these cells can destroy healthy lung tissue.


Clinical Trials

The NHLBI leads and supports many clinical trials to help find new ways to prevent, detect, and treat heart, lung, blood, and sleep disorders

Fact Sheets and Handouts

The NHLBI develops materials for patients and health professionals on many heart, lung, blood, and sleep conditions. Information from the NHLBI is based on the latest scientific findings.