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There may be instances where certain conditions, such as poor nutrition, intestinal issues, infections, and cancer, may lead to B12 deficiency
Whether this represents a benefit or a concern is unclear without more research
Still, animal products may also contain other substances that can interfere with vitamin B12 absorption, so vegetarians and vegans may be at risk of deficiency
That is the entire structural difference
This is an anecdotal community standard, not an approved or clinically proven protocol
DIY kits carry risks of improper needle handling, accidental nerve irritation, or incorrect dosage that professional supervision avoids
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