Dear Doctors: I'm a 55- year-old man, and I have been active all my life. I know target heart rates are based on age and was surprised that my heart rate while running is often between 150 and 195.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. People often use the terms "heart attack" and "cardiac arrest" ...

Expert tips from cardiologist Dr. Ali Hader on how to prepare for and navigate your heart doctor visits to get the best care possible. Seeing a cardiologist can be intimidating, whether it’s your ...

A huge California study links naloxone in cardiac arrest to higher overdose survival, though a trial is still needed to prove ...

People are curious about heart health — and for good reason. Heart disease remains the leading killer of men and women in the U.S. — each year, around 695,000 people die from cardiovascular conditions ...