Reaching the age of 100 is no longer as rare as it once was. Around the world, certain countries stand out for having unusually high numbers of centenarians. While genetics matter, research consistently shows that lifestyle, diet, healthcare access, social connections, and daily routines play a much larger role in extreme longevity. Below are 15 countries where living to 100 is more common than in most, with each entry expanded to highlight why these places continue to produce some of the world’s longest-living populations.
1. Japan
Japan leads the world in centenarians by a wide margin. Traditional diets focus on fish, vegetables, seaweed, rice, and fermented foods, all of which support heart health and low inflammation. Portion control and mindful eating are deeply ingrained cultural habits. Older adults often stay physically active through walking, gardening, and daily chores rather than intense exercise. Strong respect for elders, close community ties, and universal healthcare reduce stress and social isolation. Areas like Okinawa are famous for residents who live past 100 while remaining independent and mentally sharp.
