ScienceInsights

THC can show up on drug tests days or weeks after use. Learn how long it stays in your system based on test type, usage frequency, and body composition.

Most 2-year-olds need just 13 grams of protein a day—easier to reach than you'd think, and more isn't always better for growing toddlers.

You can spread the stomach bug even after feeling better. Learn how long norovirus and rotavirus stay contagious and when it's safe to be around others.

Quick, practical ways to ease heartburn at home, plus habits to prevent it coming back and signs it may be something else.

Meal timing matters less than you think. Here's what the science says about eating before or after the gym based on your goals.

Most sinus infections clear up on their own within 10 days. Learn how to tell if yours is viral or bacterial, and when it might be time to see a doctor.

Learn how vacuum pumps work for ED, how to use one safely, what results to expect, and how they compare to other treatment options.

Adults can take up to 1,200mg of ibuprofen daily OTC, or up to 3,200mg by prescription. Learn safe dosing limits, risks of overuse, and drug interactions.

Simple, science-backed habits like walking after meals, staying hydrated, and managing stress can help bring your blood sugar down naturally.

Wondering if you have H. pylori? Learn which symptoms point to an infection and which tests actually give reliable results.