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It can take a few years to develop a deficiency because your body can store B12 in your liver for a long time
In summary, vitamin B12 supplements need age-specific attention for safety and effectiveness
ISBN 978-1-4987-5429-3
Some people come in for regular maintenance shots, while others start more frequently to rebuild low levels before spacing visits out
People Who Have Had Gastric Surgery Gastric bypass surgery (like Roux-en-Y), sleeve gastrectomy, or other bariatric procedures significantly reduce the stomachs ability to produce intrinsic factor a protein required to absorb B12 in the small intestine
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