The secret to long life? Why life expectancy is long in France

Compared to other industrialised countries, French people tend to live relatively long lives. Currently the oldest person alive in the world is a French woman: a Catholic nun living in the South of France. So what’s the secret? Do long lunch breaks and red wine have something to do with it? What’s the economic impact of an aging population and what can the country do to improve care for a growing number of dependent people?