Healthy diets
Learning Center
Valerian: A safe and effective herbal sleep aid?
Valerian — Can this sleep aid help you sleep better?
Warm-mist versus cool-mist humidifier: Which is better for a cold?
Warm-mist and cool-mist humidifiers are equally effective in humidifying the air.
Water after meals: Does it disturb digestion?
Drinking plenty of water helps keep your digestive system on track.
What is hot yoga?
Hot yoga, also known as Bikram yoga, is an intense form of yoga performed in a heated studio.
What is reflexology?
Reflexology is gaining popularity as a stress reliever, but does it work?
Wheezing in children: Could it be asthma?
Wheezing in children may be a sign of asthma — but not always.
Yeast infection in men: How can I tell if I have one?
Yeast infections can occur in men, causing inflammation of the penis (balanitis). Learn what signs and symptoms could mean you have a yeast infection.
Zinc for colds: The final word?
Everyone's heard of taking zinc for colds. But does it really work?
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