Teenagers aren’t supposed to struggle to breathe. But two years ago, Micah Clayborne, a then-active 13-year-old middle school tennis player, knew something was wrong. Still, he pushed through the ...

In a nutshell: A team of Stanford Medicine researchers has developed a new blood test that can estimate the biological age of major organs, shedding light on why some people age faster than others and ...

Jauhar is the author of “Heart: A History” and a cardiologist at Northwell Health. In recent months the Trump administration has taken a closer look at the organ transplant system. In September it ...