Chance of colon cancer in 38 yr old female. just diagnosed with mild iron deficiency anemia. scared its colon cancer. please advise. have referral to gastro. dr doesnt seem concerned over cancer ?

Worried a little: An adult can have colon cancer, but it is less common at an early age such as under 40. Maybe less than 5% of all colon cancers happen in the age 30-40 range, but the number is not big. In any case, one's doctors will check all the major reasons for getting anemia as a middle-aged adult. Cancer is one of them, but there are other causes such as low iron intake, infections, menstrual bleeding,...