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Depending on your body and the severity of your deficiency, B12 injections can start to work in a matter of hours to a few days
Studies show that older adults might need more B12 or it more often
This is done under a doctors care
This can lead to low potassium levels and high platelet count, which can, in turn, cause an irregular heartbeat and/or hypertension
Cycling vs
It also keeps our nervous system healthy by making myelin
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