What Are the Signs of a Deficiency in Vitamin B12 and Folic Acid?

By Staff WriterLast Updated Mar 26, 2020 7:44:16 PM ET

Common symptoms of vitamin B12 and folic acid deficiency include feeling lightheaded or weak, a loss of appetite, behavioral changes and concentration problems, explains WebMD. Those with a vitamin B12 deficiency can also experience heart palpitations, shortness of breath, constipation, vision loss and nerve issues. Visible signs include having a smooth tongue and pale skin. People who lack enough folic acid can have memory problems and weight loss issues as well.