<s>[INST] my daughter has mthfr. she has major fatigue, she is 14. i give her b12 and amino acids. she has low vit.. d she is taking 5000 grams a day now. she doesn t have epstein Barr. how dose folic acid help your body. what are your cells needing for proper absorption of nutrients [/INST] Like people need to eat food for nutrition ...folic acid is one part of nutrition of blood cells. If folic acid is low people get anemia.In thallasemia minor there are low levels of folic acid so patients are supplemented folic acid from outside... </s>