What is the unhealthiest food in the world? The truth about diet and nutrition
                                
                                
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                                    4 min read                                
                            
                                Over 50% of the daily calories consumed by U.S. adults come from ultra-processed foods, a category often linked to poor health outcomes. But in the search for better eating habits, a common question arises: **What is the unhealthiest food in the world?** The answer, as science shows, is far more complex than naming a single item.