Three communities in three different countries – places where people live longer than anywhere else on earth? Is that possible? Yes, according to a recent BBC news report.

The remote Japanese island of Okinawa has a population of one million and of those 900 are centenarians, four times higher than the average in Britain or America. The small Sardinian mountain town of Ovodda is the only region of the world where as many men as women live to be 100 years of age, bucking the global trend. And the city of Loma Linda, California, USA, has citizens who live between five and 10 years longer than fellow citizens.

What are the secrets? Diet perhaps? Genes? Religion? Whatever it is, each city is the focus of research programs to see if there are lessons to be learned.