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If not loaded correctly, B12 supplementation may not be sufficient
Med Clinics North America
Association and risk factors for obstructive sleep apnea and cardiovascular diseases: a systematic review
10.2337/dc19-1465 14
Malabsorption Issues : If you have conditions like pernicious anemia, Crohns disease, or have had weight loss surgery, vitamin B12 injections may be a more effective option due to the bodys difficulty absorbing B12 through the digestive tract
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