Furthermore, in Europe we have the Mediterranean diet that is well-balanced
I do agree that diet is a major component. Indeed, that was one aspect I liked about the graphic I displayed in OP.
A fast-food diet heavy in carbohydrates and hydrogenated vegetable oils does Americans no good. Neither does the stereotypical American attitude of self-entitled sloth, indiscipline, and general weakness.
In Europe, there is more than a Mediterranean diet: All parts of Europe have more traditional diets, each in its own way. Plus, a European attitude.