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Zinc for colds: The final word?
Everyone's heard of taking zinc for colds. But does it really work?
What is BPA? Should I be worried about it?
Find out more about BPA, a chemical used in some plastics and resins, and explore options for reducing your exposure.
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.
Valerian: A safe and effective herbal sleep aid?
Valerian — Can this sleep aid help you sleep better?
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
Uncircumcised penis: Is special care needed?
Know how to wash and care for your child's uncircumcised penis.
Test anxiety: Can it be treated?
Feelings of worry and self-doubt can interfere with how well you do on tests. Here's what you can do to lower your anxiety.
Sea salt vs. table salt: What's the difference?
Should you take health claims about sea salt with a grain of salt? What makes it different from table salt?
Recurring strep throat: When is tonsillectomy useful?
Tonsillectomy may sometimes be needed in children who have recurring strep throat infections.
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?
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