The Senate has voted to confirm Robert F. Kennedy Jr. as the next secretary of health and human services, with Sen. Mitch ...

The study highlights a fundamental difference in how the immune system drives healing based on age ... regenerate healthy heart tissue, leading to scar-tissue buildup and, often, heart failure.

Newborns with heart complications can rely on their newly developed immune systems to regenerate cardiac tissues, but adults aren't so lucky. After a ...