ScienceInsights

Canker sores usually heal on their own, but the right remedies can speed things up. Here's what actually helps and what to skip.

Your immune system relies on five main types of white blood cells, each with a distinct role in keeping you healthy. Here's what they do and what your blood test reveals.

The 4-month sleep regression typically lasts 2–6 weeks. Here's why it happens and what you can do to help your baby sleep better through it.

Find out when hCG levels are high enough to detect after ovulation and why testing too early often gives misleading results.

Learn how doctors tell if vancomycin is working, from early symptom changes to blood culture results and realistic recovery timelines by infection type.

Practical ways to manage upset stomach and diarrhea at home, from staying hydrated to knowing when symptoms need a doctor's attention.

Your period's return after a C-section depends mostly on breastfeeding, not your delivery type. Here's what to expect and when.

From chicken soup to zinc lozenges, here's what foods and drinks actually help when you have a cold — and a few myths worth skipping.

Asbestos-related lung damage can take decades to show up. Learn the symptoms, how doctors test for it, and what to do if you were exposed.

Learn to spot the early signs of a stye, understand what causes them, and know when to seek care before the infection spreads.