The healthiest diets in the world refer to the traditional diets of the past before the cultural invasion of the Standard American Diet (SAD). This fact actually strengthens the association that poor diet choices do contribute to higher obesity and concurrent diabetes rates. The Mediterranean countries that for so long enjoyed low obesity and diabetes rates are now also experiencing higher rates of obesity which in time may increase higher rates of associated chronic diseases.
From all indications, the most researched diet in modern times does not really exist in its original form anymore. Any heath benefits it promoted have been lost over time and replaced with foods full of fat, sugar, salt which has led to alarming obesity rates especially in children. Can it ever make a comeback?