ScienceInsights

At 2 months, babies see bold, high-contrast colors far better than soft pastels. Here's what's happening in their eyes and how to support their vision.

Lower back herniated discs can cause sharp pain, leg numbness, and weakness. Here's what symptoms to expect and when to seek care.

A single 1,000 mg dose of Tylenol is generally safe for healthy adults, but certain factors can put your liver at risk. Here's what to know.

From honey to humidity, here's what actually helps a bad cough—and how to choose the right remedy for your type.

Learn the 11 clinical signs of a drinking problem, take two research-backed self-screenings, and find out what heavy drinking actually looks like by the numbers.

Stuffy nose relief depends on the cause. Learn which remedies actually work, from saline rinses to decongestants, and how to choose the right one.

A sudden racing heart is usually harmless, but knowing the common causes and warning signs can help you decide when to relax and when to call a doctor.

Learn what's normal for your 1-month-old's dirty diapers, from color and texture to how often breastfed and formula-fed babies typically go.

Swollen feet are often harmless, but some causes need prompt care. Learn simple relief strategies and which symptoms warrant a doctor's visit.

Early pregnancy and PMS can feel similar. Learn which physical signs may indicate pregnancy before you take a test.