Nutrition basics
Learning Center
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
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.
Pericarditis
Inflammation of the tissue surrounding the heart can cause sharp chest pain and other symptoms. Know how pericarditis is diagnosed and treated.
Natural remedies for depression: Are they effective?
For some people, certain herbal and dietary supplements seem to help with depression, but more studies are needed on their effectiveness and side effects.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Monosodium glutamate (MSG): Is it harmful?
Monosodium glutamate (MSG) can trigger headaches and other symptoms in some people.
Mindfulness exercises
Engaging with the world around you can lower your stress. Here's how to practice mindfulness meditation.
Mayo Clinic Minute: Why concussion screening is important
Concussion screening can help determine when athletes can return to play.
L-arginine: Does it lower blood pressure?
This supplement may help some people lower their blood pressure. Learn who might benefit and who should stay away from it.
Kratom: Unsafe and ineffective
Users claim kratom lifts mood and boosts energy, but there are many safety issues and questions about whether it works. Learn more before trying it.
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