What Vitamin is Required for the Growth of Bacteroides?
                                
                                
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                                    3 min read                                
                            
                                According to a study published in *eLife*, some human gut *Bacteroides* are so adept at acquiring vitamin B12 that they can actually pirate it from the human intrinsic factor. This highlights a key nutritional relationship: certain vitamins, particularly vitamin B12 and K, are absolutely required for the growth of *Bacteroides*.