In-depth

Blood transfusion

Blood transfusions boost blood levels that are low due to surgery, injury or disease. Learn about the benefits, risks and what to expect.

Bone marrow biopsy

Dizziness

Dizziness has many possible causes. The cause of dizziness may be simple, or dizziness may be a sign of a more serious disorder.

Fatigue

Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Heart arrhythmias

Nosebleeds

Shortness of breath

Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.

Stem cells: What they are and what they do

Stem cells are under study to treat diverse conditions from blood cancers to Parkinson's and heart failure. Researchers have uncovered some potential new sources that offer additional opportunities for developing regenerative solutions.

Stem cells: What they are and what they do

Stem cells are under study to treat diverse conditions from blood cancers to Parkinson's and heart failure. Researchers have uncovered some potential new sources that offer additional opportunities for developing regenerative solutions.

Mar. 18, 2014

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