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The needles are typically quite thin and, therefore, less painful than you might expect
Headache returned
Not to be confused with iron deficiency anaemia, where there aren't enough healthy red blood cells, pernicious anaemia is an autoimmune disease that prevents your body from absorbing B12 and is the most common cause of vitamin B12 deficiency in the UK
The right level of B12 or the administration of vitamin B12 shots supports healthy brain function, helping to improve focus, memory, and cognitive processing
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