Researchers have reported growing hearts containing human cells in pig embryos for the first time. The embryos survived for 21 days, and in that time their tiny hearts started beating. The findings ...

Heart rate is one of the most powerful—and underestimated—indicators of your cardiovascular health. Understanding how it ...

The human heart, a fist-sized muscle, tirelessly beats billions of times throughout life, powering every cell by delivering ...

Researchers at the Francis Crick Institute have discovered that the heart's own contractions trigger biological signals that guide the formation of a functional beating heart. Their study in zebrafish ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

"Heart disease is the leading cause of death worldwide, yet adult human heart muscle cells stop dividing after birth," Dr. Chaudhry said. "Our work was the first to show that we can regenerate the ...