ScienceInsights

Vitamin C may help slow macular degeneration, but its effects on cataracts and glaucoma are more complicated. Here's what the research actually shows.

Shortness of breath and a dry cough are common signs of interstitial lung disease, but symptoms vary by type and cause. Here's what to look out for.

Uristat turns urine bright orange because it contains an azo dye. Here's how it works, why you should limit use to two days, and how it affects urine tests.

Learn how enamel weakens and what actually helps protect it, from the right toothpaste to foods and daily habits that make a real difference.

Getting a Viagra prescription is straightforward—here's what to expect at the doctor, who qualifies, and how telehealth makes it even easier.

Intrusive thoughts about death are more common than you think. Here's what actually helps calm them, reframe them, and keep them from taking over.

Plain popcorn is a low-calorie, high-fiber snack that fits most diets well — it's the toppings and preparation that can cause problems.

Combivent Respimat is used for COPD, but is it a rescue or maintenance inhaler? Learn how it works and where it fits in your treatment plan.

Ear hematomas in dogs often start with allergies or infections that trigger head shaking. Learn what's really happening and how to help your dog.

Clear a stuffy nose with saline rinses, steam, hydration, and proper blowing technique, plus what mucus color can tell you about your health.