A revolutionary approach to longevity and ageingIn many western countries, people complain of turning invisible after 50. When they hit their mid-60s, they expect or are forced to retire, cutting them adrift from social networks and leading to a loneliness epidemic. But it doesn’t have to be this way. In Healthy to 100, Ken Stern uncovers the ground-breaking secrets of the winners in healthy longevity – countries like Singapore, Spain, Japan and South Korea – who are all top-rankers on the ‘He