As the world’s oldest man, Juan Vicente Perez Mora, dies aged 114, The Mirror takes a look at the secrets to longevity from some of the oldest people across the globe – from unique diet staples to relationship adviceAs the world’s oldest man, Juan Vicente Perez Mora, dies aged 114, The Mirror takes a look at the secrets to longevity from some of the oldest people across the globe – from unique diet staples to relationship advice