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Its the most effective method for ensuring bioavailability
This factor is not complement, cytokine or immunoglobulin, and appears to be packaged into exosomes (Benjamins et al., 2019)
However, many people are deficient in this important vitamin due to dietary restrictions, medical conditions, or absorption issues
B12 is richest in liver, clams, oysters and shellfish
How to increase your vitamin B12 intake If you are deficient, it's more than likely that you'll end up having to get regular injections
Vitamin B12 deficiency A 21st century perspective
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