What is a vitamin B12 deficiency?
- Dr.Robin Jeya Bensam MBBS, AFIH, FCIP, FRSH(Lon)
- 8 hours ago
- 1 min read

What is a vitamin B12 deficiency?
Vitamin B12 deficiency is a nutritional disorder characterized by insufficient levels of this crucial water-soluble vitamin in the body. This condition can lead to significant health complications affecting multiple body systems, particularly neurological and hematological functions.
♂️ Causes:
Inadequate dietary intake, common in vegetarians and vegans
Reduced absorption due to gastrointestinal disorders like Crohn's disease or celiac disease
Autoimmune conditions such as pernicious anemia
Certain medications that interfere with B12 absorption
Age-related reduced absorption capacity
♂️ Symptoms:
Persistent fatigue and weakness
Neurological issues like numbness and tingling in hands and feet
Difficulty maintaining balance
Memory problems and cognitive decline
Pale or jaundiced skin
Shortness of breath
Depression and mood changes
Glossitis (inflamed tongue)
♂️. Potential Complications:
Megaloblastic anemia
Increased risk of neurological disorders
Potential nerve damage
Higher cardiovascular risk
Potential pregnancy complications
♂️ Diagnosis typically involves blood tests measuring B12 levels, complete blood count, and sometimes neurological examinations.
Treatment generally includes B12 supplements, dietary changes, and addressing underlying causes, which can involve oral supplements, intramuscular injections, or high-dose treatments depending on the severity and cause of the deficiency.
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