ScienceInsights

Sugar limits for diabetics depend on the individual, but understanding added sugar, carb counting, and food labels can help you manage your intake.

Quetiapine can improve sleep within the first night, but timing depends on dose and formulation. Here's what the research says about what to expect.

The daily Tylenol limit is 4,000mg, but hidden sources in cold meds and alcohol use can make it easy to accidentally take too much.

Most canker sores heal in 1–2 weeks, but the timeline depends on the type. Learn what's normal and when to see a doctor.

Corner of your eye itching? Learn what's likely causing it and find practical ways to get relief at home.

Learn how to safely swaddle a newborn with a blanket, including hip safety tips, how snug is too snug, and when it's time to stop.

Ear pain doesn't always mean infection. Learn the key symptoms to watch for in adults and kids, and when it's time to see a doctor.

Heroin clears the blood quickly but can show up in urine for days. Learn how each test type works and what affects detection time.

The average life expectancy of 35 in 1700 is skewed by high child mortality. Adults who survived childhood often lived well into their 60s.

The 8 glasses rule is more myth than science. Here's how much water you actually need and how to tell if you're staying hydrated.