Rates of colorectal cancer in people under 50 have been rising by 2% each year since 2011, according to the American Cancer Society. Iron deficiency anemiaIron deficiency anemia, which is where a person has low iron levels, can be a sign of colon cancer. Advertisement"When someone is found to have iron deficiency anemia, I think the important question is always going to be 'why is the person having iron deficiency anemia?' Unintentional weight lossUnintentional weight loss can be a symptom of any type of cancer, including colon cancer, Cleary said. AdvertisementAbdominal painAbdominal pain, aches, or cramps that don't go away could also be an indication that a person has colon cancer.

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Persons: Dr, James Cleary, —, it's, Cleary, that's Organizations: Service, American Cancer Society, Centers for Disease Control, CDC, Mayo Clinic, Dana, Farber Cancer Institute, Cancer Locations: Boston