A 25-year-old female farmer presents with pallor and fatigue for 1 year. CBC shows RBC: 2.0×10<sup>12</sup>/L, Hb: 50g/L, WBC: 7.6×10<sup>9</sup>/L, neutrophils 0.50, lymphocytes 0.26, eosinophils 0.14, SF: 10μg/L. Blood smear reveals increased central pallor of red blood cells. A diagnosis of iron-deficiency anemia is considered. What additional history is most relevant?