** 1. since she is already under expert supervision [who has ruled out other possibilities of abortion] and came with folic acid problem as the cause, thus following points are worth mentioning: . since durian fruit contain folic acid and iron thus is believed to overcome anemia, but since low folate levels are associated with increased risk of spontaneous abortion, thus only relying on durian as source of folic acid is not advisable. . since adequate folic acid reduces the risk of neural tube defects involving the brain & spinal cord, thus fortification of products with folic acid is also essential: fortified grain, fortified breakfast cereals, green vegetables, pulses, banana, pineapple, oranges, strawberries, papaya. PS. The folic acid in foods is delicate and can be destroyed by cooking. Try to cook in a covered pan with the minimum amount of boiling water. Eat vegetables lightly steamed, microwaved, or raw. If you have any concerns about your health and your diet, speak to your doctor, who may refer you to a dietitian. 2. start taking prescription medicine folic acid [5mg] once daily, throughout pregnancy, under regular Obstetrician guidance and follow up.