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  1. Fetal Health and Development (National Library of Medicine)  
    A normal pregnancy lasts nine months. Each three-month period of pregnancy is called a trimester. During each trimester, the fetus grows and develops. Regular medical checkups and prenatal ...
  2. Pain Relievers (National Library of Medicine)  
    ... pains. There are many different pain medicines, and each one has advantages and risks. Some types of pain respond better to certain medicines than others. Each person may also have a slightly different response ...
  3. Heart Attack (National Library of Medicine)  
    Each year almost 800,000 Americans have a heart attack. A heart attack happens when blood flow ...
  4. Vitamins (National Library of Medicine)  
    ... may need to take a vitamin B12 supplement. Each vitamin has specific jobs. If you have low ...
  5. Dialysis (National Library of Medicine)  
    When your kidneys are healthy, they clean your blood. They also make hormones that keep your bones strong and your blood healthy. When your kidneys fail, ...
  6. Head and Neck Cancer (National Library of Medicine)  
    What is head and neck cancer? Head and neck cancer is the name for cancers that develop in the mouth, nose and sinuses, salivary glands, and throat and ...
  7. Teen Development (National Library of Medicine)  
    As a teenager, you go through many physical, mental, emotional, and social changes. The biggest change is puberty, the process of becoming sexually mature. ...
  8. Urethral Disorders (National Library of Medicine)  
    The urethra is the tube that allows urine to pass out of the body. In men, it's a long tube that runs through the penis. It also carries semen in men. In ...
  9. Down Syndrome (National Library of Medicine)  
    ... with Down syndrome might act and look similar, each person has different abilities. What causes Down syndrome? ... The symptoms of Down syndrome are different in each person. And people with Down syndrome may have ...
  10. Clinical Trials (National Library of Medicine)  
    ... how well new medical approaches work in people. Each study answers scientific questions and tries to find ... study, how it will be conducted, and why each part of the study is necessary. Each study ...
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