ScienceInsights

Heart palpitations are usually harmless, but knowing what causes them and when to see a doctor can bring real peace of mind.

Afrin works fast, but using it beyond three days can backfire. Here's how it works and how to use it safely.

High protein intake affects your metabolism, muscles, kidneys, and digestion. Here's what the science actually says about eating more protein.

Tylenol and ibuprofen can be taken together safely — here's how to dose them correctly and avoid exceeding daily limits.

Valium can linger in your body for days or even weeks. Learn why its half-life is so long and what affects how quickly you clear it.

Persistent hiccups often trace back to acid reflux, eating too fast, or nerve irritation. Learn what triggers them and which remedies actually help.

Your skin's outer layer has five distinct layers, each with a specific role. Here's what they are and how they work together.

Once baby starts rolling over, a few simple safety changes can help keep them safe during sleep and playtime.

Antidepressants boost serotonin within hours, so why wait weeks to feel better? The answer lies in how your brain actually rewires itself over time.

A mini heart attack can last minutes to hours, but warning signs may appear days earlier. Here's what to expect and when to seek care.