Many people use anabolic steroids to build muscle and improve their physical appearance. These drugs are especially popular ...

Anabolic steroids have become increasingly popular among people looking to build muscle, improve athletic performance, or ...

Millions of adults have atrial fibrillation—an irregular beating of the upper chambers of the heart that yields increased risk of heart failure, stroke and death. Many genetic mutations in the ...

Now, in a study in zebrafish and human heart muscle cells, researchers show that a tiny deletion in the A-band of titin — the loss of just nine amino acids out of more than 27,000 to 35,000 amino ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

In patients with persistent atrial fibrillation (AF), standard treatment with pulmonary vein isolation (PVI) ablation resulted in similar outcomes to more extensive ablation in other areas of the ...

BIRMINGHAM, Ala. – Millions of adults have atrial fibrillation — an irregular beating of the upper chambers of the heart that yields increased risk of heart failure, stroke and death. Many genetic ...