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Older adults may have higher risk factors for B12 deficiency due to gastrointestinal disorders, dietary factors, or certain medications (like proton pump inhibitors or metformin) that can interfere with B12 absorption

Exceptional Cases to Avoid Shots People with kidney problems, iron deficiencies, or known sensitivities/allergies to vitamin B12 should not get B12 injections since side effects could be more likely

Each component targets distinct mechanisms providing researchers with a comprehensive, multi-pathway toolkit for studying anti-aging biology

Slow and gentle

Both sublingual vitamin B12 supplements and B12 injections can be appropriate depending on your specific circumstances