Folic acid deficiency anemia results from lower-than-normal levels of folic acid in the body. It causes symptoms such as weakness, fatigue, and lightheadedness.

Causes of folic acid deficiency anemia include:

• Not getting enough folic acid in the diet.
• An increased need for folic acid, as can happen during pregnancy or with certain diseases, such as sickle cell disease.
• Drinking too much alcohol.
• Certain medicines.
• Artificial cleansing of the blood (hemodialysis), as is done to treat kidney disease.

Folic acid deficiency anemia is treated by increasing a person's intake of folic acid (folate).