Atherosclerosis

What is Atherosclerosis? Atherosclerosis is the process of the hardening of an artery due to the build-up of cholesterol-containing plaque. Atherosclerosis is responsible for coronary artery disease—the leading cause of death in America—and many cases of stroke....

Arrhythmia

What is Arrhythmia? Arrhythmia refers to a disturbance in the rhythm of the heartbeat. Some arrhythmias are very mild and nothing to worry about (such as most cases of atrial fibrillation and premature ventricular contractions); others are potentially life threatening...

Anxiety

What is Anxiety? Anxiety is an unpleasant emotional state ranging from mild unease to intense fear. But while fear is a rational response to a real danger, anxiety usually lacks a clear or realistic cause. Though some anxiety is normal and, in fact, healthy, higher...

Angina

What is Angina? Angina pectoris is caused by an insufficient supply of oxygen to the heart muscle. Angina usually precedes a heart attack. What are the Signs and Symptoms of Angina? The characteristic symptoms are a squeezing or pressure-like pain in the chest...

Alzheimer’s Disease

What is Alzheimer’s Disease? Alzheimer’s disease (AD) is a degenerative brain disorder that manifests as a progressive deterioration of memory and mental function—a state of mind commonly referred to as dementia. In the United States, 5 percent of the...

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