What are the disadvantages of Brazil nuts?
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                According to the National Institutes of Health, the tolerable upper intake level (UL) for selenium in adults is 400 mcg, an amount that can be easily exceeded when consuming more than a few Brazil nuts. This uniquely high concentration of selenium is one of the primary disadvantages of Brazil nuts, and the main reason for strict moderation.