CAUSES & RISK FACTORS

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KNOWN CAUSES & RISKS

Although the most commonly recognised cause of vitamin B12 deficiency is Pernicious Anaemia, there is a variety of different causes and risk factors that can also cause or contribute to the deficiency. Whilst most people will have only one cause of their deficiency, it is possible to have more than one cause present.

 

To simplify, these causes can be put into 6 main categories:

  1. Dietary deficiency

  2. Autoimmune disease

  3. Drug or surgically induced deficiency

  4. Inborn metabolic error

  5. Parasitic infection

  6. Other malabsorption/processing issues

Please see more about these main categories below.

CAUSES & RISKS EXPLAINED

The lists below are by no means exhaustive, but offer clinically supported causes and risk factors for vitamin B12 deficiencies. Please click on those in bold to see documented and peer reviewed sources that supports our information.

Dietary Deficiency

Autoimmune Disease

Drug/Treatment Induced Deficiency

Inborn Metabolic Error

Parasitic Infection

Other Malabsorption/Processing Issues