Fitness basics
Learning Center
Portion control for weight loss
If your portions are out of control, you may be supersizing your meals and yourself. Check out this guide to proper portion sizes.
Planning to travel with atrial fibrillation?
Extra preparation before a trip can keep your plans — and heart — running smoothly if you have an irregular heartbeat. Get expert recommendations for your pre-travel checklist.
Placenta: How it works, what's normal
Understand how this pregnancy organ works and what conditions can affect it.
Piercings: How to prevent complications
Piercings are popular, but the risks are real. Know how to prevent an infection.
Personal health records and patient portals
Keeping health records electronically makes it easy to get medical information using a computer or smartphone.
Performance-enhancing drugs: Know the risks
Learn about the health risks of doping in athletes.
Penis-enlargement products: Do they work?
Considering penis enlargement? Get the facts about male-enhancement pills, pumps, exercises and surgeries.
Penis health: Identify and prevent problems
Understand the factors that affect penis health and how to identify problems.
Paleo diet: What is it and why is it so popular?
Is a diet based on what early humans might have eaten right for modern humans?
Pain medicines after surgery
Pain medicines and anesthesia can control pain after surgery and lead to faster healing.
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