Brown discharge is usually old blood and often harmless, but certain signs mean it's worth checking with a doctor. Here's what causes it and when to act.
Learn the behavioral and emotional signs of sex addiction, from loss of control to secrecy, and how to tell when sexual behavior becomes a genuine problem.
B positive blood type is rarer than you might expect. Here's what the data says about its frequency, compatibility, inheritance, and why blood banks need it.