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Las causas de la anemia por deficiencia de hierro incluyen la pérdida de sangre, consumir muy poco hierro, problemas para absorber el hierro y ciertas afecciones.

The respiratory system helps you breathe. The main parts of the respiratory system are the lungs, the airways, and the muscles that enable breathing. The circulatory system, which is made up of the heart, veins, arteries, and capillaries, brings blood to and from the lungs and delivers nutrients and oxygen to tissues of the body while removing carbon dioxide and waste products. Other body systems that work with the respiratory system include the nervous system, lymph system, and immune system.

La causa de la enfermedad isquémica del corazón depende del tipo que tenga. La enfermedad isquémica del corazón también puede tener más de una causa, incluida la acumulación de placa o cambios moleculares en los vasos sanguíneos.

Your risk for a specific type of vasculitis may be higher because of your age, your family history and genetics, infections you have, your lifestyle habits, medicines you take, other medical conditions you have, your race or ethnicity, and your sex.

The types of pleural disorders are pleural effusion, pleurisy, and pneumothorax. Pleural effusion is a buildup of fluid in the pleural space. Pleurisy is inflammation of the pleura. Pneumothorax occurs when air or other gas builds up in the pleural space and may cause part or all of the lung to collapse.

Pleural disorders may occur with no symptoms, or they may have obvious symptoms. Signs, symptoms, and complications vary depending on the pleural disorder and how severe it is.