Folate deficiency: Inadequate consumption of folic acid to meet the body's needs. Folic acid is a naturally occurring vitamin found in green leafy vegetables, liver, yeast and mushrooms. Alcohol and excessive cooking can affect folic acid absorption. Some medications may also cause folic acid deficiency. Folate deficiency during pregnancy can result in neural tube defects in the infant.
Vitamin B12 Deficiency: A deficiency of Vitamin B12 primarily causes anemias the body is unable to make sufficient quantities of normal red blood cells. Severe cases can lead to permanent nervous system problems. The vitamin B12 deficiency can result from absorption problems, insufficient dietary intake, certain medications (e.g. metformin), inherited conditions (e.g. transcobalamin deficiency) and certain chronic parasitic intestinal infestations.