These cells transmit messages to the brain, where specific smells or tastes are identified. 1  Olfactory (smell nerve) cells are stimulated by the odors around usthe fragrance from a rose, the smell of bread baking.  Gustatory (taste nerve) cells are clustered in the taste buds of the mouth and throat. They react to food or drink mixed with saliva. Many of the small bumps that can be seen on the tongue contain taste buds. These surface cells send taste information to nearby nerve fibers, which send messages to the brain.
Anemia refers to a lowering of red blood cell count. In terms of colon cancer anemia may be caused by a microscopic amount of chronic blood loss in the stool. In this case, iron is lost with the red blood cells and can slowly deplete the total body stores of iron.
Also, younger-onset colon cancer appears to affect African-Americans more often than other groups. The most common symptoms of colon cancer are rectal bleeding and lower abdominal cramping. Other telltale symptoms may include a change in stool consistency, constipation, diarrhea or weight loss. Blood tests that reveal new-onset anemia can often signal the presence of a colon tumor. Unfortunately, colon cancer often is not considered as a cause of such symptoms in people who are younger than 50. As a consequence, colon cancer diagnosis can be delayed. Statistics show that colon cancer tends to be diagnosed at later stages in young people.