ScienceInsights

Brown spotting has many causes, from ovulation to birth control. Learn what's usually harmless and when it's worth calling your doctor.

HIV is still a global pandemic, not yet endemic. Here's what the current numbers show and what it would actually take to change that.

Black toenails can stem from bruising, fungal infections, or shoe friction—but sometimes they point to something more serious worth checking out.

Overeating often comes down to hormones, blood sugar, stress, and brain chemistry. Here's what's actually driving it and what can help.

Tooth sensitivity can often be reduced or eliminated with the right toothpaste, brushing habits, diet, and dental treatments. Here's how to find lasting relief.

Bloating often comes down to food, air, or hormones, but sometimes signals a digestive condition. Learn what's causing yours and when to see a doctor.

Gardasil protects against HPV strains linked to cancer and genital warts. Learn who should get it, when, and how well it works.

Chronic inflammation is a low-grade immune response that lingers for months or years, quietly raising the risk of heart disease, diabetes, and more.

A growing belly can mean fat, bloating, hormones, or something medical. Here's how to tell the difference and when to see a doctor.

Benadryl is an antihistamine, not a beta blocker. Learn how these two medications work differently and what to know if you take them together.