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doi: 10.1016/j.fas.2013.08.001
B12 deficiency can lead to symptoms such as chronic fatigue, weakness, and slow metabolism resulting in weight gain
However, if you live someplace extremely warm and you do not have air conditioning, your injections should be refrigerated
Adequate B12 is linked to better concentration, faster recall, and reduced brain fog, especially in adults over 40, in anyone on a plant-forward diet, and in patients with the MTHFR gene variant that affects how the body processes folate and B12
These can include whether you have an underlying health condition
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