Uuuum....what? Do you mean "why would a lack of folic acid NOT cause nuerological problems" or do you mean why DOES it? Please clarify,as my friend is anxious to know the answer.
No, but they can cause anemia and a nutritional deficiency.
The most common cause of anemia in adults is iron deficiency.
Iron is in the blood, so if there is a low percentuage of iron in it, it can cause anemia.
In developing countries located in tropical climates, the most common cause of iron deficiency anemia is infestation with hookworm.
Anaemia is a deficiency of iron, night blindness is a deficiency if vitamin A and rickets is a deficiency of vitamin D.
Low osmptic pressure
The most common cause of iron deficiency anemia (IDA) is a lack of iron in the body, often due to inadequate dietary intake or chronic blood loss.
The lungs oyegenate the red cells. They'll keep working at it all the harder with anemia.
It would be important to consider several causes of anemia, the most common one being iron-deficiency anemia. After that, blood loss from hemorrhoids, ulcers, and the like, need to be considered. You should also be tested for sickle cell anemia, if this hasn't been done already. In addition, folic acid deficiency can cause macrocytic anemia, and B12 deficiency can cause megaloblastic anemia.
The deficiency of Vitamin B6 causes depression, nauseas, vomiting, skin disorders, anemia, and kidney stones.
Iron deficiency causes anemia, in which there are too few red blood cells in circulation, and possibly the ones that are in circulation are not functioning well.
Caring for anemia depends on the underlying cause of the anemia. Therefore, determining the cause of anemia is very important. For example, iron-deficiency anemia occurs if the diet is too low in iron. Iron is an essential component of the hemoglobin in red blood cells that carries oxygen. Iron-deficiency anemia can also occur if the GI tract has a problem with absorbing the iron in the diet. Another cause of anemia is vitamin B12 deficiency. Again, vitamin B12 deficiency can occur if the diet is too low in vitamin B12, or if your body has a problem absorbing it. Anemia can also occur if there is kidney disease, since the kidney normally makes a hormone, erythropoietin, which tells your body to make red blood cells. In summary, caring for anemia requires identifying the cause of anemia and then resolving the underlying cause.