Nutrition basics
Learning Center
Coffee and health: What does the research say?
Has coffee gotten a bum rap? Can it be part of a healthy diet?
Coma
Learn what can cause this state of prolonged loss of consciousness. While a coma rarely lasts longer than a few weeks, some people never wake from one.
Craving and chewing ice: A sign of anemia?
Craving and chewing ice (pagophagia) is often associated with iron deficiency with or without anemia.
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Diabetes symptoms: When diabetes symptoms are a concern
Diabetes symptoms can be subtle. Pay attention to the clues your body gives you.
Diabetic neuropathy types: Symptoms tell the story
Depending on which type of this condition you have, certain parts of the body may be affected. That can cause symptoms to vary.
Diarrhea
Learn more about what causes this common, unpleasant digestive condition, and how you can treat and prevent it.
Diet soda: How much is too much?
Diet soda may help you cut calories, but other low-calorie options abound.
Dietary fat: Know which to choose
Not all fat is created equal. Find out which type of fat to choose — and which to avoid — for good health.
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