Each participant will consume 60 grams of iron fortified breakfast cereals containing a total of 9 mg of iron daily for 8 weeks with either vitamin D3 placebo or vitamin D3 (1500 IU) according to their assigned group. The participants will consume the iron fortified breakfast cereals in the morning, with 200 ml of semi-skimmed milk daily for a period of 8 weeks. The participants will consume the vitamin D or placebo in the evening with 200 ml of water. Participants will be asked to maintain their dietary habits and physical activity during the course of study. Participants will also be asked not to donate blood during the course of the study. The remaining supplements will be returned at the final clinic (week 8), and compliance will be estimated.