| UPDATED: 22:53, Tue, Mar 16, 2021 Link copied Sign up for FREE health tips to live a long and happy life SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. Japan outperforms other G7 countries when it comes to life expectancy, recent data published by the World Health Organization (WHO) shows. While there is no single explanation, diet is thought to play a prominent role. Research published in the British Medical Journal (BMJ), strengthens this association.