How can you get sick with anemia?

Depends on severity: Depending on what type and how severe it can range form feeling tired to fainting. Also how fast you become anemic plays a role. Acute anemia, like in a bedding can make someone very ill while some people with chronic iron deficiency anemia may just feel tired or dizzy (body compensates for it) Ask your doctor what kind it is and how to treat it.In women with menses iron deficiency is more common