ScienceInsights

White vaginal discharge is usually normal, but texture and smell can signal a yeast infection or bacterial vaginosis. Here's how to tell the difference.

You rarely need both, but if switching from Pepto-Bismol to Imodium, timing matters. Here's what to know about waiting periods and safer choices.

Nasal steroid sprays are generally more effective than antihistamines for most allergy symptoms. Learn how different options compare and when to consider prescriptions.

Learn to recognize a muscle strain by its symptoms, how it differs from soreness or a sprain, and when it's time to see a doctor.

Omeprazole doses vary by condition, ranging from 20mg to 120mg daily. Learn what's typical, when higher doses are used, and how to take it safely.

Some foot soaks help with athlete's foot, others can make it worse. Here's what actually works and why drying your feet afterward matters most.

Daily water needs vary by person. Learn how to estimate what's right for you and spot the signs you're staying well hydrated.

The 3 points of contact rule helps prevent falls when climbing ladders. Learn how it works and simple habits to keep you safer on the job or at home.

Most 12-year-old girls need 9–11 hours of sleep, but puberty, screens, and hormones can make that harder to get than it sounds.

Yohimbe's effects typically last 2–4 hours, but how long it stays in your system depends on your metabolism, dose, and other factors.