Think of Italy, and the mind drifts inevitably to food. Tagliatelle con tartufo nero. Zuppa di pesce. Saltimbocca alla Romana. These days, thinking of Italian food means thinking also of nutrition. The so-called Mediterranean diet, with its essentials of olive oil, pasta, tomatoes, and red wine, is championed for heart health and longevity by doctors and nutritionists around the world. What better place than Italy to study the science of food?