Causes of anemia range from simple deficiencies such as iron, B12, Folic Acid, Vitamin B1, B2, B5 & B6, Vitamins A & E, copper & zinc. So often basic foundational supplementation will correct an anemia.Please see Dr Slagle's Newsletter on VITAMIN B12 / FOLIC ACID / HOMOCYSTEINE
Other anemias are associated with chronic disease states (thyroid disorders, liver & kidney disease, cancer & cancer treatments, medication side effects, malabsorption syndromes & parasites, hereditary anemias, etc.
Get serum ferritin testing to see your total iron storage levels.
If your anemia is chemotherapy or radiation connected, see that condition.