Biology Insights

Herpes doesn't always look the same. See how oral, genital, and other herpes outbreaks appear, and why a visual check alone can't confirm a diagnosis.

Loose stools and diarrhea aren't always the same thing. Learn how doctors tell them apart and when it's worth paying closer attention.

UTIs need antibiotics to clear up, but you can ease symptoms fast with pain relief, hydration, and a few simple changes while you recover.

Eczema affects the skin barrier in different ways depending on the type. Learn what triggers it, how it's diagnosed, and how to manage it effectively.

Swollen eye? The right remedy depends on the cause. Learn which home treatments actually help and when it's time to see a doctor.

Simple, evidence-based home remedies to help keep your sinuses clear, from staying hydrated to nasal irrigation and knowing when to see a doctor.

Red 40 is one of the most common food dyes, but questions about its safety persist. Here's what the research actually says.

Learn how herpes spreads, how likely transmission really is, and what steps can meaningfully lower the risk for you and your partner.

Gingivitis isn't just about skipping brushing. Learn how plaque triggers gum inflammation and why hormones, diabetes, and medications can raise your risk.

Esgic combines three ingredients to treat tension headaches, but it comes with real risks including dependence and rebound headaches.

Minoxidil isn't a controlled substance, but topical and oral forms have different rules. Here's what to know before buying or traveling with it.

Bupropion XL is used for depression, seasonal mood changes, and quitting smoking. Learn how it works, typical dosing, and what side effects to expect.

Trichomoniasis often causes no symptoms in men, but it can still spread and cause complications. Here's what to know about transmission, testing, and treatment.

Sunken under eyes can stem from aging, genetics, or lifestyle factors. Learn what's behind that hollow look and what treatments can help.

A moldy dehumidifier can spread spores through your air, but the health risk depends on your sensitivity and how long it goes untreated.

Learn what sperm count means, what's considered normal, and how lifestyle and health factors can affect your results.

BV is caused by a shift in vaginal bacteria, but why it keeps returning is more complex. Learn what drives recurrence and how to lower your risk.

Spinach is a good source of folate, but cooking and storage affect how much you actually absorb. Here's what to know to get the most from it.

Triggers can come from the world around you or from within. Learn how the brain and body respond to both, and how to start recognizing your own.