Scientists obtained stem cells expressing cardiac muscle-specific genes and proteins. The cells displayed regular rhythmic contractions similar to a heart, confirming that they were functional ...

Mild traumatic brain injury or sport-related concussions occur frequently in contact sports such as football, rugby and ice hockey. A concussion doesn’t just affect the brain; it results in stress to ...

An arrhythmia is an irregular heartbeat. An arrhythmia may feel like a racing heart or fluttering. It is not always serious but can sometimes indicate a potentially fatal heart problem. Arrhythmias — ...