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Stool that is pale or grey may be caused by insufficient bile output due to conditions such as cholecystitis, gallstones, giardia parasitic infection, hepatitis, chronic pancreatitis, or cirrhosis. Bile pigments from the liver give stool its brownish color. If there is decreased bile output, stool is much lighter in color.
Bile has an important role in giving stool its brown color so when a patient tells Kumar Desai, MD, gastroenterologist, hepatologist, and pancreaticobiliary specialist in Thousand Oaks, California ...
[1] [2] Some of this remains in the large intestine, and its conversion to stercobilin gives feces their brown color. Some is reabsorbed into the bloodstream and then delivered to the kidneys. When urobilinogen is exposed to air, it is oxidized to urobilin, which has a yellow color. [3]
Urobilin is excreted by the kidneys to give urine its yellow color and stercobilin is excreted in the feces giving stool its characteristic brown color. A trace (~1%) of the urobilinogen is reabsorbed into the enterohepatic circulation to be re-excreted in the bile. [41] Conjugated bilirubin's half-life is shorter than delta bilirubin. [42]
Steatorrhea refers to bulky, foul-smelling, oily stool that tends to be pale in color and float in the toilet bowl, resisting flushing. (These are the 9 most common reasons your poop is black .)
After the meconium, the first stool expelled, a newborn's feces contains only bile, which gives it a yellow-green color. Breast feeding babies expel soft, pale yellowish, and not quite malodorous matter; but once the baby begins to eat, and the body starts expelling bilirubin from dead red blood cells, its matter acquires the familiar brown ...
Narrow stools. Oda noticed what she described as “pencil-thin” stools every time she used the bathroom. She thought it was due to constipation. Doctors call this symptom a change in stool caliber.
It is further processed to become the chemical that gives feces its brown color. [1] Bilirubin is a pigment that results from the breakdown of the heme portion of hemoglobin. The liver conjugates bilirubin, making it water-soluble; and the conjugated form is then excreted in urine as urobilinogen and in the feces as stercobilinogen.