ScienceInsights

Learn what healthy cholesterol numbers actually look like, from LDL and HDL to triglycerides, and how to make sense of your lab results.

Becoming an ultrasound tech takes 1 to 4 years depending on your starting point. Here's what to expect at each stage of the process.

Learn how to brush your toddler's teeth properly, from toothpaste amount to technique, and why you should be doing the brushing until age 6.

Plasma donation takes 1–3 hours depending on your visit. Here's what affects the timeline and how to make your appointment go faster.

The tend and befriend response is a stress reaction centered on nurturing and seeking social connection, and it may offer real health benefits.

Eye twitching is usually harmless and tied to stress or sleep, but here's what causes it, how to make it stop, and when to see a doctor.

Learn how to support someone with mental illness in ways that actually help, while keeping your own wellbeing intact.

Sunburned skin peeling? Learn how to moisturize, soothe, and protect your skin while it heals, plus what to avoid making it worse.

Forearm bruising often comes down to thinning skin, sun damage, or common medications. Here's what's usually behind it and when to see a doctor.

Practical techniques to help you fall asleep faster, from controlled breathing and body relaxation to light management and when melatonin actually helps.