Nutrition basics
Learning Center
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Office ergonomics: Your how-to guide
Use this visual ergonomics guide to make your sitting work space more comfortable.
Omega-3 in fish: How eating fish helps your heart
Learn how omega-3 fatty acids in fish can benefit heart health.
Opioid stewardship: What is it?
Learn about the roles everyone plays in opioid stewardship, safety and overdose.
Pacifiers: Are they good for your baby?
Is it OK to offer your baby a pacifier? Know the pros and cons.
Penis health: Identify and prevent problems
Understand the factors that affect penis health and how to identify problems.
Pericarditis
Inflammation of the tissue surrounding the heart can cause sharp chest pain and other symptoms. Know how pericarditis is diagnosed and treated.
Phenylalanine in diet soda: Is it harmful?
You may be worried about phenylalanine because of a warning on diet soda. Find out why the warning is there.
Pregnancy diet: Focus on these essential nutrients
Find out how to pack your pregnancy diet with essential nutrients, including folate, iron and vitamin D.
Pregnancy nutrition: Foods to avoid during pregnancy
Learn what not to eat when you're pregnant.
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