Nutrition basics
Learning Center
Chart of high-fiber foods
Looking to eat more fiber every day? Here are some common foods that can help.
Cervical cancer
Screening with Pap tests can reduce the risk of this cancer that begins in the cervix. Learn more about symptoms, causes, prevention and treatment.
Carbohydrates: How carbs fit into a healthy diet
See why carbohydrates are important for your health and learn which ones to choose.
Canker sore
Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.
Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.
Caffeine: How much is too much?
Is your caffeine habit causing problems? Find out how much is too much and if you need to curb your consumption.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Bronchitis
Bronchitis is an inflammation of the tubes that carry air to and from the lungs. Coughing and shortness of breath are the major symptoms.
Broken arm
Treatment depends on the site and severity of the injury. Simple breaks might be treated with a sling and ice. Complicated fractures may require surgery.
Bone metastasis
Learn about the symptoms and causes of cancer that spreads to the bones. Find out about treatments, including medications, radiation and surgery.
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