1.   Even when blood flow is restored to the heart muscle, it may be too late for the heart to repair itself, however.

2.   Challenging decades of medical dogma, researchers have discovered that damaged hearts can repair themselves by growing brand-new muscle cells.

3.   Challenging generations of medical lore, researchers have found striking new evidence that the human heart can repair itself.

4.   In the meantime, Anversa said his belief that the heart can repair itself is slowly gaining acceptance.