Failure to get enough iron results in this condition, since iron has a powerful role in transporting oxygen throughout the body
Folate deficiency causes macrocytic/megaloblastic (big cell) anemia. This type of anemia is characterized by larger and fewer red blood that can’t produce DNA and RNA fast enough (cells grow but don’t divide)
B12 deficiency has similar consequences to health as folate deficiency (including big cell anemia and neural-tube defects) because an enzyme that requires B12 is needed by a folate-dependent enzyme to synthesize DNA
B6 deficiency can cause another type of anemia in which the size of red blood cells is normal or somewhat smaller, but the hemoglobin content is lower. This leads the red blood cells to have less capacity for carrying oxygen, resulting in muscle weakness, fatigue, and shortness of breath
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