The Iron Law refers to two levels: the physical and the moral.
At the physical level, four to five grams of iron are needed to be healthy. However, as soon as ten percent of iron is missing due to menstruation, the first symptoms of deficiency may appear. Typical symptoms are exhaustion, concentration problems, ADD, listlessness to depressive mood, dizziness, insomnia, neck tension, headaches, hair loss or anaemia.
Women with iron deficiency symptoms can only become healthy if they have the same amount of iron as adult men. At the moral level, the Iron Law says that women with iron deficiency symptoms have the right to the same amount of iron as men. However, the Iron Law also says that because women are innocent of their menstruation, health insurance companies must show solidarity and pay for iron therapy.