Why Okinawans Eat So Many Sweet Potatoes: The Key to Their Longevity?
                                
                                
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                                    4 min read                                
                            
                                According to the Okinawa Centenarian Study, a diet rich in sweet potatoes has been a cornerstone of the world's longest-living population. So, why do Okinawans eat so many sweet potatoes, and how did this humble tuber become a symbol of vitality?