Because the Mediterranean diet is an idea, a distillation of the eating habits of the people living near the seaside.
If you come in Turin you could ask in the winter for the Bagna Caoda, that is vegetables, olive oil and anchoves based, but it's actually not a mediterranean food.
Northern Italy food was traditionally based on grains, especially rice and dairy and meat products. BUT due the globalization and the habits change junk food arrived, but anyway I think moder unprocessed food is bought in respect to other countries, as you could see in open air markets and shops.
For drunk driving, alchool, tobacco and drug abuses in youg people is a big problem, worsened in the last 15-20 years. So the drunks causin driving accidents is a problem, also with elderly people.