Fitness basics
Learning Center
Zinc for colds: The final word?
Everyone's heard of taking zinc for colds. But does it really work?
Valerian: A safe and effective herbal sleep aid?
Valerian — Can this sleep aid help you sleep better?
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?
Premature birth
Here's what you need to know about caring for a premature baby and the possible health problems of a preterm birth.
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.
Mindfulness exercises
Engaging with the world around you can lower your stress. Here's how to practice mindfulness meditation.
Mayo Clinic Minute: How to hit your target heart rate
Learn how to exercise at your target heart rate.
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.
Kratom for opioid withdrawal: Does it work?
Kratom is promoted as an aid in overcoming withdrawal from opioid medications, but research suggests that it leads to more health problems than it solves.
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