However, while pernicious anaemia is the common cause of the condition: “The exact cause of pernicious anaemia is unknown” says the NHS.
Pernicious anaemia is most likely to affect: “women around 60 years of age, people with a family history of the condition and those with another autoimmune condition, such as Addison’s disease or vitiligo”.
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Another cause of B12 deficiency could a lack of it in the diet.
Meat, fish, and dairy products normally provide enough vitamin B12 for the body; however, those on vegan diets may need to take supplements.
Source: Daily Express
