Generic Truvada works the same as the brand-name version for HIV treatment and PrEP, but costs significantly less. Here's what to know about its uses and side effects.
Experimental studies test cause and effect by controlling variables, using random assignment, and minimizing bias — here's how they work and why they matter.
Feeling powerless over alcohol isn't a moral failing. Learn how addiction changes the brain and why recognizing powerlessness can be the first step toward recovery.
Radiation technicians use imaging equipment to help diagnose patients. Learn what they do, how they differ from therapists, and what the career path looks like.