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Untreated pernicious anaemia can cause serious medical issues, which include irreversible damage to the nervous system
B12 levels can become low as a result of inadequate nutrition, decreased absorption of this vitamin in the intestines, stomach problems, infections or cancer
Vitamin B12 provides a boost of energy and plays a key role in the digestion and metabolism of fats, proteins and carbohydrates
Too little B12 in your body can affect your bones, hair, skin, nails, energy level, mood, and memory
Deficiency is widespread, with peer-reviewed research describing it as a global health concern affecting populations across all age groups and geographies (Cashman et al., American Journal of Clinical Nutrition , 2016
