2015 results
Causes of Vitamin B12 Deficiency - Cobalamin
Decreased Intake
Pancreas: Insufficiency
Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
Causes of Vitamin B12 ... Deficiency - Cobalamin ... : SIBO, Celiac disease ... pylori infection, B12 ... #Deficiency #Cobalamin
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
of Low Vitamin B12 ... Levels Low vitamin B12 ... syndrome Food-bound cobalamin ... , coeliac disease ... deficiency #low #cobalamin
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 • Vit B12 - aka cobalamin. Present in foods derived from animal
Vitamin B12 (Cobalamin ... Etiology: • Vit B12 ... - aka cobalamin ... to IBD, celiac disease ... #Cobalamin #Deficiency
Prevalence of Common Nutritional Deficiencies and Supplement Recommendations in Bariatric Patients 
Calcium, Vitamin B1 (thiamine), Vitamin
Calcium, Vitamin B1 ... thiamine), Vitamin B12 ... (cobalamin), Folic
Demyelinating Diseases - Differential Diagnosis
 • Inflammatory: MS, ADEM, NMO, Paraneoplastic, Sjogren's, Polyarteritis nodosa, SLE
 •
Demyelinating Diseases ... Other: Vitamin B12 ... Demyelinating #Diseases
Dizziness - Differential Diagnosis Framework
"Tell me what you mean by dizzy without using the word dizzy."
Vertigo:
Neuritis, Meniere's Disease ... Cardiac: Valvular Disease ... neuropathy (DM, B12 ... Dysfunction: Parkinson's disease ... Coordination/Strength: B12
Red Blood Cell (RBC) Morphology
Microcytic RBC: Pyridoxine deficiency, Thalassemia, Iron deficiency anemia, Chronic disease anemia (sometimes),
anemia, Chronic disease ... Macrocytic RBC: Vitamin B12 ... deficiency, Liver Disease ... Uremia, Liver disease ... Hemoglobin SS disease
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
- Low Serum B12 ... - Low Serum B12 ... • Pancreatic Disease ... • Rule out B12 ... • Liver Disease
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Anemia of Chronic Disease ... Anemia of Chronic Disease ... Renal Disease, Liver ... Disease, Endocrinopathy ... (>100 fL) • B12
Clinically Important Vitamins and Vitamin Deficiency States
Fat-soluble Vitamins: 
 • Vitamin A - Xerophthalmia, night blindness,
• Thiamine B1 ... • Riboflavin B2 ... gestation • Vitamin B12