IL-1β (4.94 pg/mL for iron sufficiency, 8.09 pg/mL for iron deficiency, p = 0.029), and IL-7 were higher in iron deficiency patients (0.19 pg/mL for iron sufficiency, 0.39 pg/mL for iron deficiency, p = 0.014) (Figure 3). Here, IL1B is linked to Iron deficiency anemia.