ScienceInsights

Foot blisters form when friction separates skin layers, but moisture, socks, and medical conditions play a role too. Here's how to prevent them.

Increased vaginal discharge is often normal, but changes in color, smell, or texture can signal an infection or irritation worth checking out.

A 1000 mg dose of Tylenol typically provides 4–6 hours of pain relief for adults. Here's what affects how long it lasts and how to use it safely.

Dry scalp is treatable with the right habits. Learn how washing frequency, water temperature, and moisturizing can bring lasting relief.

Many STIs cause no symptoms at all. Learn which signs to watch for, when to get tested after exposure, and what testing actually involves.

Cold sores typically take 8–10 days to run their course. Learn the stages, when symptoms first appear, and how early treatment can shorten that timeline.

110/69 falls in the normal range and is generally healthy, but whether it's right for you depends on your age, symptoms, and overall health.

At 5 months, most babies need 24–32 oz of milk daily. Learn how to read hunger cues and know if your baby is getting enough.

Caffeine pills typically kick in within 30–60 minutes, but food, metabolism, and genetics all affect how fast you actually feel the effects.

Learn how much screen time is healthy for kids at different ages, what the research says about physical and eye health risks, and realistic ways to set limits.