Yes, it's quite possible to reduce dark circles under eyes by eating food rich in iron. Usually, dark circles under eyes not only associated with too much stress, depression or unhealthy lifestyle habits but also has something to do with iron deficiency, poor nutrition, allergies, and aging, etc. One of the most common signs of the iron deficiency is the dark under eye rings. Besides, iron deficiency can also lead to many other problems such as tiredness, pale skin, dizziness, and even shortness of breath. Now that knowing the dark circle causes reason, to increase your intake of iron-rich foods may be helpful and effective to get rid of dark circles under eyes. So you should eat more food rich in iron, for example, vegetables and fruits such as spinach, broccoli, prunes, lentils, seeds, oatmeal, and brown rice; berries, citrus fruits, kiwi, peach, etc. They are both rich in iron and vitamins C, and vitamin C is quite necessary for the absorption of iron. Besides, some meat such as beef also contain rich irons, and it is also easy for absorption. Except eating, hot compress is also helpful for dark circles, you can have a try.