If you constantly feel tired and fatigued, chances are that you suffer from iron deficiency. The World Health Organisation has listed certain tips that could prevent iron deficiency. Increase your intake of dark leafy greens, legumes including lentils and beans as well as eggs. Nuts and seeds too are a great addition to your diet. Double up on citrus fruits including oranges and lemons. Lastly, avoid having tea and coffee along with your regular meals as they reduce the absorption of iron by the body.