domingo, 1 de julio de 2012

Hair Problems: MedlinePlus

Hair Problems: MedlinePlus

 
A service of the U.S. National Library of Medicine
From the National Institutes of HealthNational Institutes of Health


Hair Problems


 
 
Did you know that the average person has 5 million hairs? Hair grows all over your body except on your lips, palms and the soles of your feet. It takes about a month for healthy hair to grow half an inch. Most hairs grow for up to six years and then fall out. New hairs grow in their place.
Hair helps keep you warm. It also protects your eyes, ears and nose from small particles in the air. Common problem with the hair and scalp include hair loss, infections, and flaking.


Photograph of a hairbrush

National Institutes of Health

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