ScienceInsights

The rectum and colon are both part of the large intestine, but they're distinct structures with different functions—and that difference matters for cancer diagnosis.

Curious how long a smoking high lasts? Learn what affects the timeline, from tolerance to product type, and how long impairment lingers.

Red eyes are usually harmless, but the right remedy depends on the cause. Learn what works for allergies, dry eyes, screens, and when to see a doctor.

White on your tongue could be harmless buildup or something worth checking out. Here's how to tell the difference between common causes.

Learn how saline flows through your nasal passages when using a neti pot, and what it actually does to relieve congestion safely.

Learn the common signs of diabetes, from frequent urination to nerve tingling, and why prediabetes often shows no symptoms at all.

From drugstore creams to better shaving habits, here's what actually helps treat and prevent razor bumps.

Standing up too fast can make anyone dizzy, but here's how to tell when it's harmless and when it's worth talking to your doctor.

Learn which foods and eating patterns help manage blood sugar, improve insulin sensitivity, and support long-term diabetes health.

Gingivitis often clears up with better daily habits. Learn which brushing, flossing, and nutrition steps actually help your gums heal at home.