Which nutrients are associated with macrocytic anemia?

Which nutrients are associated with macrocytic anemia?

• A. B12
• B. Both B12 and Folate
• C. Folate
• D. Iron

Answer: (B)

Macrocytic anemia happens when red blood cell production is slowed due to impaired DNA synthesis in developing erythroid cells, causing the cells to grow larger than normal. The two nutrients whose deficiencies most commonly produce this pattern are vitamin B12 and folate. Both are essential for the formation of thymidine and proper DNA replication; without them, cells cannot divide as they should, leading to larger, abnormal red blood cells (megaloblasts) and an increased MCV. Iron deficiency, in contrast, typically causes microcytic anemia with smaller red blood cells, not macrocytosis. In addition, vitamin B12 deficiency can have neurological effects, while folate deficiency does not usually cause those neurological symptoms. So, the nutrients associated with macrocytic anemia are vitamin B12 and folate.

Macrocytic anemia happens when red blood cell production is slowed due to impaired DNA synthesis in developing erythroid cells, causing the cells to grow larger than normal. The two nutrients whose deficiencies most commonly produce this pattern are vitamin B12 and folate. Both are essential for the formation of thymidine and proper DNA replication; without them, cells cannot divide as they should, leading to larger, abnormal red blood cells (megaloblasts) and an increased MCV.

Iron deficiency, in contrast, typically causes microcytic anemia with smaller red blood cells, not macrocytosis. In addition, vitamin B12 deficiency can have neurological effects, while folate deficiency does not usually cause those neurological symptoms.

So, the nutrients associated with macrocytic anemia are vitamin B12 and folate.