ScienceInsights

Knee pain can stem from worn cartilage, old injuries, weak muscles, or even your footwear. Here's what's actually behind common knee problems.

THC affects dopamine and reward pathways in ways that can lead to dependence. Here's what the science says about how cannabis addiction develops.

Excessive sweating can affect your skin, hydration, and mental health. Learn when it's a medical concern and what options exist for managing it.

Tooth pain can stem from sensitivity, cavities, gum disease, and more. Learn what might be causing your discomfort and how to find relief.

Fasting may help some people with IBS by resetting gut motility and bacteria, but the evidence is mixed and the approach matters a lot.

Diastolic pressure is the bottom number in your blood pressure reading. Learn what it measures, what healthy ranges look like, and when to talk to your doctor.

Some tinnitus causes are fully treatable, while others respond well to sound therapy, hearing aids, or CBT. Here's what the evidence actually supports.

Learn which symptoms and situations count as true medical emergencies, from heart attacks and strokes to fever in children and mental health crises.

Good health is more than not being sick. Learn what metabolic markers, sleep, movement, and social connection actually mean for how well you live.

NSAIDs are common pain relievers, but they're not risk-free. Learn how they work, when they're used, and who should use them with caution.