Older adults, particularly those over 60, are most likely to suffer from vitamin B12 deficiency. This is supported by several sources:
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NICE guidelines state that marginal depletion of B12 (a precursor to deficiency) affects over 20% of individuals aged 60 and older. Prevalence | Background information | Anaemia - B12 and folate deficiency
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Research on B12 deficiency and depression in the elderly estimates that 10-15% of individuals over 60 may suffer from the deficiency. Vitamin B12 Deficiency and Depression in the Elderly: Review and ...
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WebMD explicitly states that people over 60 are most likely to have B12 deficiency. What Is Pernicious Anemia?
While older adults are the most affected group, other populations are also at increased risk:
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Vegans and vegetarians: Strict adherence to these diets can lead to B12 deficiency due to its limited presence in plant-based foods. Studies show approximately 11% of vegans are deficient in Vitamin B12. Prevalence | Background information | Anaemia - B12 and folate deficiency
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Individuals with certain medical conditions: Conditions affecting the absorption of B12, such as pernicious anemia (the most common cause of clinically evident B12 deficiency), increase the risk of deficiency. Vitamin B12 - Health Professional Fact Sheet
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Individuals taking certain medications: Some medications, like metformin (used to treat diabetes), can interfere with B12 absorption. How to Detect & Treat Vitamin B12 Deficiency in Aging Adults
In summary, while several groups are vulnerable to B12 deficiency, older adults (over 60) represent the population segment most significantly impacted.
