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Petroleum jelly: Safe for a dry nose?
Rarely, inhaling petroleum jelly for prolonged periods can cause lung inflammation (lipoid pneumonia).
Paleo diet: What is it and why is it so popular?
Is a diet based on what early humans might have eaten right for modern humans?
Ozone air purifiers: Can they improve asthma symptoms?
Ozone air purifiers don't reduce asthma symptoms. In fact, they can make asthma worse.
Nuts and your heart: Eating nuts for heart health
Discover how walnuts, almonds and other nuts can improve heart health.
Nonprescription laxatives for constipation: Use with caution
Looking for a laxative to relieve constipation? Learn how different nonprescription medicines work and be aware of some risks.
Nonprescription acne treatment: Which products work best?
Find out how acne treatments you can buy at the store differ, what main ingredients to look for and how to use them for best results.
Neti pot: Can it clear my nose?
Learn more about this container designed to rinse debris or mucus from the nasal cavity.
Nephrotic syndrome
Swelling around your feet and ankles is a common sign of this condition that occurs when your kidneys pass too much protein in your urine.
Napping: Do's and don'ts for healthy adults
Napping can benefit your health. Find out how to make the most of a nap.
Mumps
Find out more about the symptoms and treatment of this viral illness and how vaccines can prevent it.
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