ScienceInsights

ARFID was added to the DSM-5 in 2013. Here's what the official diagnostic criteria actually cover and how the disorder is defined.

The annular ligament keeps your radius bone in place during forearm rotation. Learn how it works and what happens when it's injured in kids or adults.

Itch is more complex than it seems. Learn how itch signals reach your brain, why the scratch cycle is hard to break, and how chronic itch is treated.

Burning feet can stem from diabetes, nerve damage, vitamin deficiencies, and more. Learn the common causes and how doctors identify the source.

Capsicum offers more than heat — it supports pain relief, heart health, blood sugar, and metabolism through capsaicin and a rich mix of antioxidants.

Learn about common gastrointestinal disorders like GERD, IBS, and IBD, including their symptoms and when to see a doctor.

Gingivitis can stem from more than skipping floss. Hormones, medications, and diet all play a role — and the good news is it's usually reversible.

CLL develops from gene mutations in B-cells, not a single cause. Learn how chromosomal changes, chemical exposures, and family history raise your risk.

Alcohol addiction is a diagnosable brain condition with real risk factors, physical effects, and effective treatments. Here's what the science says.

200mg of caffeine is about two cups of coffee. Here's what that means for your daily intake, how it feels, and whether it's a safe amount for most people.