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How Long Does Nicotine Stay in Your System?

Medically reviewed by Amelia MacIntyre, DO Nicotine quickly enters your bloodstream. Your liver then breaks down nicotine into several byproducts, primarily cotinine. Depending on what you're testing, ...

Volcano Shows Alarming Signs of Activity After 700,000 Years Since Last Eruption

ADVERTISEMENT ADVERTISEMENT Lead Global Correspondent A long-dormant volcano has swollen 3.5 inches in 10 months, scientists ...

What your cough really tells you about the state of your health

Chesty, tickly or dry? We consult the experts on what different cough variations mean, and how best to treat them ...