Iron deficiencies are the cause of a number of disorders, chief among which are general weakness, feelings of fatigue, excessive sleepiness or trouble concentrating. They can interfere with everyday functioning, resulting in problems with learning or maintaining adequate physical fitness. Characteristic symptoms of iron deficiency anaemia also include brittle fingernails, hair loss, pale skin, a burning and smoothed tongue, or inflamed eyes. The appearance of any of these symptoms should prompt the girl's mother to consult her doctor and perform basic investigations. Diagnosis begins with a blood count, from which a preliminary diagnosis can be made. A result indicating low haemoglobin and red blood cell levels should prompt the doctor diagnosing an adolescent with heavy periods to refer the patient for an iron test. If iron levels are found to be low, the diet should be enriched with foods that contain the highest amount of this micronutrient, such as liver, red meat, fish and egg yolks, wholemeal bread, oatmeal, legumes and leafy vegetables. The absorption of iron, as well as its absorption, will be much more effective if it is consumed together with foods rich in vitamin C, such as cranberries, blueberries, blackcurrant, lemons, kiwi. Eating plenty of raw vegetables and fresh fruit rich in Vit. C increases the absorption of iron by up to 3 times. Drinking fruit juices is therefore recommended with meals consisting of iron-rich foods.

In the case of juvenile bleeding, treatment begins with the least invasive methods, i.e. symptomatic treatment, to stop the bleeding. In order to improve the poor general condition caused by excessive blood loss and, in some cases, the appearance of iron deficiency anaemia or anaemia, the deficiency is first supplemented by administering anti-haemorrhagic drugs, blood-forming agents or blood or blood preparations. This treatment should be supplemented with a properly composed diet rich in iron, as well as vitamin and mineral preparations containing readily available iron.