Signs You’re Low on Vitamin B12
Medically Reviewed by Dan Brennan, MD on April 13, 2022
Written by Paul Frysh
Numbness
1/13
You’re Colder Than Usual
2/13
Brain Fog
3/13
Weakness
4/13
Smooth Tongue
5/13
Herbivores Beware
6/13
Heart Palpitations
7/13
Reason for Shortage: Age
8/13
Reason for Shortage: Weight Surgery
9/13
Mouth Sores
10/13
Reason for Shortage: Medications
11/13
Digestive Woes
12/13
Caution for Pregnant Vegetarians
13/13
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SOURCES
American Family Physician: “Vitamin B12 Deficiency: Recognition and Management,” “Common Tongue Conditions in Primary Care.”
American Society of Hematology: “Anemia.”
Harvard Health Publishing: “Vitamin B12 deficiency can be sneaky, harmful.”
Mayo Clinic: “Vitamin B-12.”
U.K. National Health Service: “Vitamin B12 or folate deficiency anaemia.”
NIH Office of Dietary Supplements: “Vitamin B12 Fact Sheet.”
The Journal of the American Osteopathic Association: “Nutritional Deficiencies After Gastric Bypass Surgery.”
April 13, 2022
Medically Reviewed by: Dan Brennan, MD
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