Thyroid cancer has several known risk factors, from childhood radiation exposure to inherited genes. Here's what the research says about who is most at risk.
Dry coughs can linger for surprising reasons. Learn which home remedies actually work, what hidden causes to consider, and when it's time to call a doctor.
Golden blood, or Rh-null, is one of the rarest blood types known. Learn what causes it, how it affects health, and why only a handful of people have it.