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For instance, patients with inflammatory bowel disease, such as Crohns disease, or those with celiac disease , may have trouble absorbing vitamin B12 due to gut damage
Theres no such thing as magic.
They buy research-grade vials from overseas sellers with no medical oversight and no guarantee that the product is sterile, accurately dosed, or even correctly labeled
Potential tumor promotion : Given its angiogenic properties, there is theoretical concern it could contribute to tumor growth or neovascularization in certain contexts
Blood work can help clarify vitamin levels or other possible causes of persistent fatigue
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