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Tests & Procedures

Claudication

Too little blood flow to the legs and arms can cause pain, especially during exercise.…

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Clear liquid diet

Need to be on a clear liquid diet? Learn which foods to eat and which…

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Cleft lip and cleft palate

When an unborn baby's face and mouth are developing, openings or splits in the upper…

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Clinical depression: What does that mean?

The term "clinical depression" means severe, persistent depression. It's also called major depression or major…

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Clubfoot

This is when a baby is born with a foot fixed in a turned position.…

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Cluster headache

These painful headaches cause severe pain on one side of the head and tend to…

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Coarctation of the aorta

This heart condition is usually present at birth. It's treatable but requires lifelong health checkups.…

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Cobra

Try this yoga pose to strengthen and stretch your back.

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Cochlear implants

This electronic device improves hearing in people who have severe hearing loss from inner ear…

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Coconut oil: Can it cure hypothyroidism?

This oil has been touted by some as a cure for hypothyroidism. Truth or hype?

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Coconut water: Is it super hydrating?

This drink is promoted as "super hydrating." But is it really any better than plain…

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コエンザイムQ10

Learn how coenzyme Q10 might help treat certain heart conditions and prevent migraine headaches.

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Coffee and health: What does the research say?

Can coffee be part of a healthy diet?

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Coffee calories: Sabotaging your weight loss?

Plain coffee has only a few calories. But the calories jump up when adding extras.

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認知行動療法

Learning how your thoughts, feelings and behaviors interact helps you view challenging situations more clearly…

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Cold and flu viruses: How long can they live outside the body?

Some viruses are more resilient than you may think. Learn more about how they spread…

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Cold hands

Feeling like your hands are always cold may not be cause for concern. But sometimes…

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Cold medicines for kids: What's the risk?

Experts don't advise giving cold medicines to young children. Here's why.

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Cold or allergy: Which is it?

Although colds and seasonal allergies share some of the same symptoms, they are very different…

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Cold remedies: What works, what doesn't, what can't hurt

Cold remedies: Some help, some don't. Learn how to tell the difference.

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Cold sore

Learn more about the causes, symptoms, treatment and prevention of this common lip sore caused…

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Cold symptoms: Does drinking milk increase phlegm?

Colds mean extra thick and sticky mucus, but dairy milk doesn't make phlegm worse.

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Cold urticaria

Cold causes this allergic skin response. It most often affects young adults, with symptoms ranging…

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Colectomy

If you're having colon surgery, learn what to expect, the risks and how to prepare.

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Colic

Consoling a baby who cries a lot for no known reason is tough. Learn ways…

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Colloidal silver supplements: Are they safe?

Colloidal silver supplements are often promoted as cure-alls, but evidence of effectiveness is lacking. Side…

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Colon cancer

Find out about symptoms and causes for this cancer that starts in the large intestine.…

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Colon cancer screening: At what age can you stop?

Some groups recommend people over 75 may consider stopping colon cancer screening. Not everyone agrees.…

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Colon cancer screening: Weighing the options

Find out more about the pros and cons of specific tests used for colon cancer…

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Colon cancer stool: What to look for and how to test at home

Colon cancer can affect your stools. Find out what to look for and how to…

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