Answer
Iron is necessary to produce hemoglobin. If we supply sufficient iron, the amount of hemoglobin in Andrew's blood will increase, shifting the hemoglobin equilibrium in the direction of the products.
Work Step by Step
With more iron in his body, the amount of hemoglobin will also increase.
$$Hb(aq) + O_2(g) \leftrightharpoons HbO_2(aq)$$
As we can see by this reaction, increasing the amount of hemoglobin $(Hb)$ will shift the equilibrium in the direction of the products.
