What are the serious consequences of anemia in one-year-old babies: First, iron deficiency in the body does not appear quickly, before the appearance of anemia, iron deficiency can endanger the health of the baby. Iron deficiency affects hemoglobin production and also affects myoglobin synthesis, which reduces the activity of certain enzymes in the body and thus affects the function of organs throughout the body. Secondly, iron deficiency anemia is manifested as pallor, weakness, inactivity, older babies will say dizziness, tinnitus and decreased appetite, a few have heterophagia, often vomiting, diarrhea, but also stomatitis, tongue inflammation, gastritis, indigestion, etc. Thirdly, iron deficiency will affect the baby’s intellectual development and also lead to a decrease in the body’s resistance and easy to contract diseases. Therefore, anemia is the invisible killer of babies and must attract sufficient attention of parents.