Re: Do taste buds ever die? and, Do they ever re-birth?

The cells in the taste buds are renewed. Practically all of the cells in 
your body are slowly replaced, except your brain cells and your heart 
cells. Some cells are replaced pretty quickly (like your skin cells and 
the cells in your intestines), and other cells are replaced more slowly, 
like those in your bones and liver.

The taste bud receptor cells themselves are replaced every 1 to 2 weeks. 

Below are some places where you can find more information about the sense 
of taste:
 http://faculty.washington.edu/chudler/tasty.html http://www.ultranet.com/~jkimball/BiologyPages/T/Taste.html http://www.sciam.com/2001/0301issue/0301smith.html

Thanks for your excellent question.