Posted 1/4/2008 11:26 PM (GMT -7)
Mucus may lighten the color of stool, but it will never turn it white.
You very likely have a liver blockage. A substance called urobilinogen gives stool its dark color. Urobilinogen is a product of bilirubin degradation. Bilirubin is a breakdown product of red blood cells, which is degraded in the liver. If stools are white or clay colored, you probably have a blockage.
Go to the doctor immediately!