Signs and Symptoms of Vitamin B12 Deficiency

Vitamin B12 is an essential nutrient that your body needs for processes, like DNA synthesis, energy production, and central nervous system function

1. Headaches

B12 insufficiency and deficiency can lead to neurological side effects, including headaches.

2. Fatigue

If you’re low or deficient in B12, you’ll likely feel fatigued. Your body’s cells need B12 to function properly.

3. Pale or yellow skin

Like the condition called iron deficiency anemia, anemia related to B12 deficiency may make your skin pale due to a lack of fully-matured, healthy red blood cells in the body

4. Difficulty concentrating and mental impairment

People with low or deficient B12 levels may feel foggy-headed and have difficulty concentrating and completing tasks.

5. Depressive symptoms

B12 is essential to the proper functioning of your central nervous system, and a deficiency in this nutrient can impact your mental health.

6. Gastrointestinal issues

A B12 deficiency may also cause diarrhea, nausea, constipation, bloating, gas, and other gastrointestinal symptoms

7. Paresthesia in hands and feet

Paresthesia is a medical term that refers to a burning or pins-and-needles sensation in certain areas of the body, like the hands and feet.

8. Pain and inflammation of the mouth and tongue 

Glossitis is a medical term that refers to an inflamed, red, and painful tongue. It can be caused by a B12 deficiency.