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MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

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B Vitamins - National Library of Medicine

The B vitamins are: B1 (thiamine) B2 (riboflavin) B3 (niacin) B5 (pantothenic acid) B6 B7 (biotin) B12 Folic acid These vitamins help the process your body uses ...

Back Pain - National Library of Medicine

If you've ever groaned, "Oh, my aching back!", you are not alone. Back pain is one of the most common medical problems, affecting 8 out of 10 people at some ...

Bad Breath - National Library of Medicine

There are many reasons why you might have bad breath. You can get it if you don't brush and floss regularly. Bacteria that build up in your mouth and between ...

Barotrauma - National Library of Medicine

Barotrauma means injury to your body because of changes in barometric (air) or water pressure. One common type happens to your ear. A change in altitude may cause ...

Bed Bugs - National Library of Medicine

Bed bugs bite you and feed on your blood. You may have no reaction to the bites, or you may have small marks or itching. Severe allergic reactions are rare. ...

Bereavement - National Library of Medicine

Bereavement is the period of grief and mourning after a death. When you grieve, it's part of the normal process of reacting to a loss. You may experience grief as ...

Biopsy - National Library of Medicine

A biopsy is a procedure that removes cells or tissue from your body. A doctor called a pathologist looks at the cells or tissue under a microscope to check ...

Bird Flu - National Library of Medicine

What is bird flu? Birds, just like people, can get the flu. Another name for bird flu is avian influenza. The viruses that cause bird flu normally only ...



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