Sinus infections usually start with a cold, allergies, or irritants that cause swelling and trap mucus. Learn what leads to them and why some people keep getting them.
Plasma is the liquid part of blood that does far more than carry red cells — it transports nutrients, fights infection, and helps keep your body in balance.
Esophageal cancer often causes no symptoms early on. Learn which warning signs to watch for, including swallowing trouble, weight loss, and persistent heartburn.
Daily Zyrtec is generally safe for most people, but rebound itching, sedation, and other side effects are worth knowing before you commit to long-term use.
Most flu cases resolve in 5–7 days, but fatigue can linger longer. Here's what to expect each day, when you're contagious, and who may take more time to recover.