http://www.madsci.org/posts/archives/2005-08/1123273958.Bc.r...
The cells in the body do turn over, but not uniformly every 7 years. Some things are as old as you are. The atoms in your skeleton get replaced every 7 tears, but these aren't the most permanent things in your body.
http://www.madsci.org/posts/archives/2005-08/1123273958.Bc.r...
The cells in the body do turn over, but not uniformly every 7 years. Some things are as old as you are. The atoms in your skeleton get replaced every 7 tears, but these aren't the most permanent things in your body.