Q. I recently saw my physician for a complete evaluation, and she told me that I am at low risk for coronary heart disease. What exactly does that mean? A. We know there are certain risk factors that, ...

Ejection fraction refers to how much blood the heart pumps out during a contraction. An abnormal ejection fraction can be a sign of heart failure. Some people might need treatment to improve their ...

Numbers can help determine a person’s health. Blood pressure, temperature, blood chemistry and other metrics are among them. Interestingly, one number — a fraction — is a relevant measure of the ...

What is the most bizarre real number that you can imagine? Probably many people think of an irrational number such as pi (π) or Euler’s number. And indeed, such values can be considered “wild.” After ...