ScienceInsights

Low libido can stem from stress, hormones, medications, or sleep issues. Here's what commonly drives the change and when to talk to a doctor.

Needing more sleep than others isn't always laziness. Thyroid issues, depression, nutrient deficiencies, and genetics can all raise your sleep needs.

DayQuil typically starts working within 30 minutes, but timing depends on the ingredient and your body. Here's what to expect after each dose.

Inner ear specialists go by different names depending on their focus. Learn which type of doctor treats your specific hearing or balance concern.

Smelly gas usually comes down to sulfur compounds, certain foods, and gut bacteria. Here's what's actually causing it and how to reduce it.

Learn what raises the risk of triple-negative breast cancer, from BRCA mutations and race to body weight and breastfeeding history.

Itchy skin cancer can look like a scaly patch, pearly bump, or changing mole. Learn what sets it apart from harmless rashes and when to get it checked.

Your body clears alcohol at a steady rate, but several factors affect how long it stays detectable. Here's what the science actually says.

Brain tumors have distinct MRI appearances depending on type. Learn how radiologists tell glioblastomas, meningiomas, and metastases apart on a scan.