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Chemotherapy works by killing rapidly dividing cancer cells. As it wipes out cancer cells, it also can destroy fast-growing healthy cells, which may cause side effects. Lower blood cell production You...

When first diagnosed with cancer, many people ask about their prognosis. You might want to know whether your cancer is relatively easy or more difficult to cure. Your doctor can't predict the future, ...

Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. ...

Coronary artery disease develops when the major blood vessels ― the coronary arteries ― that supply your heart with blood, oxygen and nutrients become damaged or diseased. Cholesterol-containing depos...

In heart valve disease, also known as valvular heart disease, one or more of the valves in your heart doesn't work properly. Your heart has four valves that keep blood flowing in the correct directio...

Heart rhythm problems, or heart arrhythmias, occur when the electrical impulses that coordinate your heartbeats don't work properly, causing your heart to beat too fast, too slow or irregularly. Hear...

Congenital heart disease is one or more problems with the heart's structure that you're born with. Congenital heart disease, also called congenital heart defect, can change the way blood flows through...

Peripheral artery disease, also called peripheral arterial disease, is a common circulatory problem where narrowed arteries reduce blood flow to your limbs. When you develop peripheral artery disease...

Heart failure, sometimes known as congestive heart failure, occurs when your heart muscle doesn't pump blood as well as it should. Certain conditions, such as narrowed arteries or high blood pressure,...

Aortic valve disease is a condition where the valve between the main pumping chamber of your heart and the main artery to your body, the aorta, doesn't work properly. Aortic valve disease may be a con...