The Mediterranean diet is also likely to be a factor in Italian longevity. Stefania Salmaso, Director, National Centre for Epidemiology and Health Promotion in Rome, told me: “Since the 1960s there has been a big improvement in the Italian diet, with much more fresh fish and a wider variety of foods. Fresh vegetables and fruit are commonly available and we use a lot of olive oil in cooking, and less animal fats than is found in British dishes.”

Traditionally, Italians have drunk wine with meals and avoided the sort of binge drinking that is commonplace in Britain, but Dr Salmaso warns that habits are changing for the worse among the young.

Several studies have linked the Mediterranean diet with a reduced risk of heart disease. Only last month a trial in the New England Journal of Medicine, external involving more than 7,000 people in Spain found that those given either a litre of extra virgin olive oil, or 200g of walnuts, hazelnuts and almonds every week for five years had a significantly reduced risk of stroke and heart disease compared to a third control group who were simply advised to have a low-fat diet.

How do the Italians view their health? Do they celebrate their position as among the longest living nations in the world? Apparently not. “Not a single Italian journalist contacted me about the Lancet study” said Stefania Salmaso in Rome. “People here don’t realise how lucky they are. All the focus is on the political crisis. I think that good news gets ignored.”

Can we be certain why average life expectancy in Italy is 81.5 years compared to 79.9 in the UK? Is it diet, healthcare, social structure, even climate – and which is the most important? Dr Edmund Jessop, vice-president, UK Faculty of Public Health, told me: “To be honest, nobody knows. Life expectancy looks like a simple number but it’s incredibly complicated – with a huge number of factors all playing a part. We can speculate about the causes, but it’s impossible to give a single definitive answer.”

Dining and Cooking