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Aplastic anemia occurs because of damage to stem cells inside bone marrow, which is the sponge-like tissue within your bones. Many diseases and conditions can damage the stem cells in bone marrow. As a result, the bone marrow makes fewer red blood cells, white blood cells, and platelets.

Asthma is a chronic, or long-term, condition that intermittently inflames and narrows the airways in the lungs. The inflammation makes the airways swell. Asthma causes periods of wheezing, chest tightness, shortness of breath, and coughing.

Interstitial lung diseases (ILDs) are a group of more than 200 different disorders that cause scarring in the lungs. Scar tissue in the lungs can make it harder for you to breathe normally.

La bronquitis es una afección en la que las vías aéreas de los pulmones se inflaman lo que causa tos, a menudo, con moco o sonido tipo silbido al respirar. La bronquitis aguda desaparece después de algunas semanas pero la bronquitis crónica dura meses y puede ser grave. Conozca más acerca de los síntomas y del tratamiento, y cómo participar en ensayos clínicos.

Sleep apnea can be caused by a person’s physical structure or medical conditions. These include obesity, large tonsils, endocrine disorders, neuromuscular disorders, heart or kidney failure, certain genetic syndromes, and premature birth.

A heart attack happens when the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked and the heart can’t get oxygen. If you think you or someone else may be having heart attack symptoms or a heart attack, call 9–1–1 for emergency medical care.

Three NHLBI-funded trials showed the health benefits of the DASH diet, such as lowering high blood pressure and LDL cholesterol in the blood, and shaped the final DASH eating plan recommendations.

Heart conditions and other disorders, age-related changes, rheumatic fever, or infections can cause acquired heart valve disease. These factors change the shape or flexibility of once-normal heart valves. The cause of congenital heart valve disease isn't know.

Carotid artery disease may not cause signs or symptoms until it severely narrows or blocks a carotid artery. Signs and symptoms may include a bruit, a transient ischemic attack (TIA), or a stroke. It is important to call 9–1–1 for emergency help if you think you are having a TIA or stroke.

Your doctor will diagnose a heart attack based on your signs and symptoms, your medical and family histories, and results from one or more tests: electrocardiogram (EKG), blood tests, and coronary angiography.