Should we all be concerned about our cortisol levels? I took a blood stress test and spoke with experts to find out.

As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

A vitamin B12 blood test is one way to know if you’re B12 deficient. Some people opt for a urine test instead. Learn when ...

Sarah is an experienced writer and editor enthusiastic about helping readers live their healthiest and happiest lives. Before joining Forbes Health, Sarah worked as a writer for various digital ...

Scientists at Rutgers Health have discovered that a simple blood test could diagnose asthma and determine its severity, a ...