Foods That Cause High Vitamin B and When to Be Cautious
                                
                                
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                                    6 min read                                
                            
                                Over 60,000 cases of toxic exposure related to vitamins and dietary supplements occur annually in the United States, yet toxicity from foods alone is exceedingly rare. While many foods are rich in the eight B vitamins, the risk of consuming too much to cause harm comes almost exclusively from high-dose supplements and fortified foods.