What food has the best source of B12?
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, adults need about 2.4 micrograms of vitamin B12 per day to maintain healthy nerve cells and blood cells.  Knowing what food has the best source of B12 is essential, as this crucial nutrient is not produced by the human body and must be obtained from dietary sources.