ScienceInsights

XR medications don't all last the same amount of time. Here's how long Adderall XR, Xanax XR, Wellbutrin XL, and Metformin XR actually work in your body.

Learn what causes creamy vaginal discharge, where it comes from, and why it's a completely normal part of how the body works.

Learn how STD testing works, when to get tested, and what to expect from at-home kits and clinic visits, including costs and next steps after results.

Cold sores are caused by HSV-1, a virus that stays dormant in your nerves and reactivates when triggered by stress, sun, or illness.

Learn what genital herpes actually feels like, from early warning signs to outbreaks, healing, and why some people notice no symptoms at all.

Grief is more complex than five stages. Learn how psychology actually understands loss, what normal grief looks like, and when it may need clinical support.

Sleeping pills work in surprisingly different ways—from calming GABA to blocking wakefulness signals. Here's what's actually happening in your brain.

Bacterial tonsillitis is usually caused by strep and clears up with antibiotics, but leaving it untreated can lead to serious complications.

Excess gas usually comes down to diet, swallowed air, or gut sensitivities. Learn what's behind it and what actually helps reduce it.

From saltwater rinses to clove oil, here are practical, evidence-backed ways to relieve sore gums at home and when to see a dentist.