What happens to heart cells in the seconds and minutes following a heart attack? Without oxygen, heart cells slowly become unable to produce ATP, a cell’s main form of energy, their vitality. Once ...

One of the many important jobs of your blood is to deliver oxygen throughout your body. But when you have heart failure, your heart muscle might be weaker and may not pump blood the way it normally ...

If you’re having a heart attack, your life might someday be saved by pond scum. That’s because these lowly bacteria are capable of producing something a stricken heart desperately needs: oxygen. In ...