text_1: History of cancer of the colon 20 years ago at age 70 when cause of anemia was followed up.  Her hemoglobin still falls but he doesn't think she has any more cancer.  She takes iron supplements daily.  Question is what causes hemoglobin to fall?  Hemoglobin today 10.5 (lower).
text_2: What is causing her hemoglobin to fall (10.5 today)?