Fitness basics
Learning Center
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.
Mayo Clinic Minute: How to hit your target heart rate
Learn how to exercise at your target heart rate.
Mindfulness exercises
Engaging with the world around you can lower your stress. Here's how to practice mindfulness meditation.
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.
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?
Pyloric stenosis
In this condition, a valve between an infant's stomach and small intestine fails to open enough for food to pass through. Surgery is the treatment.
Valerian: A safe and effective herbal sleep aid?
Valerian — Can this sleep aid help you sleep better?
Zinc for colds: The final word?
Everyone's heard of taking zinc for colds. But does it really work?
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