Okinawa’s Longevity Secret: The Sweet Potato Diet That Faded With American Influence
Researchers attribute Okinawa’s historic cluster of centenarians to a diet dominated by sweet potatoes, which provided 60-69% of daily calories for generations. This high-carb, low-protein regimen, combined with physical labor and portion control, created a unique longevity advantage. However, this edge vanished after 1945 as American military influence introduced processed foods, leading to a sharp rise in obesity and a drop in life expectancy. Modern data suggests genetics and lifestyle play larger roles than any single food, and some researchers question the accuracy of historical records due to wartime data loss.
