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According to Holland and Barrett, there are eight telltale signs you are "dangerously" lacking in B12
It seems reasonable to assume that patients who feel unwell due to lack of B12 will be less able to fight the coronavirus, should they get infected
Low levels of B12 can produce symptoms both physical and psychological
Fatigue and Headaches : A few individuals report feeling tired or experiencing headaches after receiving the injections, although these symptoms are typically transient
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