Which of the following statements regarding macrocytic megaloblastic anemias are correct?
1) Folate deficiency is more common in patients who are vegan and do not eat meat
2) Folate requires the presence of intrinsic factor for absorption
3) B12 deficiency is more common in patients who do not eat rich leafy greens
4) Folate and B12 deficiency anemias have similar symptoms, but neurological symptoms will only occur in patients who have folate deficiency anemia
5) Of the two megaloblastic anemias, folate deficiency anemia is the one that is deadly
6) If patients have both B12 and folate deficiency, treatment of folate deficiency can hide the symptoms of B12 deficiency
7) B12 deficiency and folate deficiency are more common in patients who have alcohol use disorder
