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What Age is B12 Deficiency Common in People?

According to studies in the US and UK, approximately 20% of adults over the age of 60 are deficient in vitamin B12, making it a very common issue among older adults. While most people associate deficiency with older age, it is crucial to recognize that infants and individuals with certain dietary restrictions or medical conditions are also at significant risk. Understanding **what age is B12 deficiency common in people?** is essential for timely diagnosis and intervention.