In women of childbearing age, the most common cause of iron deficiency anemia is a loss of iron in the blood due to heavy menstruation or pregnancy. A poor diet or certain intestinal diseases that affect how the body absorbs iron can also cause iron deficiency anemia.
Direct democracy (also known as pure democracy) is a form of democracy in which people decide (e.g. vote on, form consensus on) policy initiatives directly. This differs from the majority of modern Western-style democracies, which are indirect democracies.
The easiest way to define Direct Democracy is that it's the form of democracy where all decisions are made by the voters. Every voter had an equal voice. Again, this is only ideal when you have a limited voting population (either by demographics or by population - the Greeks used demographics).