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Ventricular fibrillation, a type of arrhythmia, causes most sudden cardiac arrests. Other problems with the heart's electrical system, including diseases or conditions that can cause the electrical problems—such as coronary heart disease, physical stress, certain inherited disorders, and structural changes in the heart—also can lead to sudden cardiac arrest.

A stroke occurs when the flow of oxygen rich blood to a portion of the brain is interrupted, which can cause brain cells to die.

The main types of physical activity are aerobic, muscle-strengthening, bone-strengthening, and stretching. Aerobic activity, which makes your heart beat faster, provides the most benefit for your heart and lungs. Depending on your fitness level, aerobic activity can be light, moderate, or vigorous.

Physical activity is any body movement that works your muscles, which requires more energy than resting. Examples include walking, running, dancing, swimming, yoga, and gardening. Exercise is a type of planned or structured physical activity.

Una alimentación saludable para el corazón incluye vegetales, frutas, granos enteros, productos lácteos sin grasa o bajos en grasa, pescado, carnes magras (con poca grasa), pollo y otras aves, huevos, nueces, semillas, productos de soya, legumbres y aceites vegetales (excepto los aceites de coco y de palma). Además, limita el sodio, las grasas saturadas y grasas trans, los azúcares agregados y el alcohol.

Practicar actividad física con regularidad y disminuir el estilo de vida sedentario pueden mejorar el estado físico y reducir muchos factores de riesgo de las enfermedades del corazón, entre ellos, reducir los niveles de colesterol LDL (“colesterol malo”), aumentar los niveles de colesterol HDL (“colesterol bueno”) en la sangre, controlar la presión arterial alta y ayudarle a perder el exceso de peso.

COPD has no cure yet. However, you can take steps to manage your symptoms and slow the progression of the disease. Steps include avoiding lung irritants, getting ongoing care, managing the disease and its symptoms, and preparing for emergencies.

At first, COPD may cause no symptoms or only mild symptoms. As the disease worsens, common signs and symptoms include an ongoing cough (with or without mucus), shortness of breath, wheezing or whistling when breathing, and chest tightness.

Long-term exposure to lung irritants—smoke, air pollution, chemical fumes, or dusts—that damage the lungs and the airways usually is the cause of COPD. A rare genetic condition called alpha-1 antitrypsin (AAT) deficiency can also cause the disease.

Anemia is a condition in which your blood has a lower-than-normal amount of red blood cells or hemoglobin.