ScienceInsights

Spacing meals 4 to 5 hours apart tends to work well for most people. Here's what your body does between meals and how to tell if your timing is off.

Going without sleep for a week takes a serious toll on your mind and body. Here's what the science says happens at each stage.

Alzheimer's progression varies widely, from silent early changes to later stages. Learn what shapes the timeline and what to expect at each stage.

Learn the same signs doctors look for to tell if your symptoms point to a sinus infection, including discharge color, facial tenderness, and tooth pain.

The Spanish flu killed somewhere between 50 and 100 million people, but why such a wide range? Here's what we know about the deadliest pandemic in modern history.

From lab discovery to pharmacy shelves, learn how a drug moves through four clinical phases and why the process typically takes over a decade.

Simple, evidence-based habits like walking, staying hydrated, and pairing carbs wisely can help keep your blood sugar in a healthier range.

Learn which symptoms point to a sinus infection, what mucus color actually means, and when it's time to see a doctor.

Cold compresses, tea bags, and targeted remedies can ease a swollen eye at home—here's what works and when to see a doctor.

Dog pneumonia progresses through four stages, from early congestion to resolution. Learn what happens at each stage and what recovery looks like.