The cultures that live the longest cluster in a few specific regions: Hong Kong (average life expectancy of 85.5 years), Japan (84.7), South Korea (84.3), and a handful of smaller communities scattered across the globe where reaching 100 is remarkably common. But raw life expectancy numbers only tell part of the story. The more interesting question is what these cultures actually do differently, and the answers are surprisingly consistent.
The Countries With the Highest Life Expectancy
Hong Kong tops the global rankings with an overall life expectancy of 85.5 years, with women averaging 88.1 and men 82.8. Japan follows at 84.7, then South Korea at 84.3. These numbers come from 2023 UN data and reflect entire populations, not just the healthiest subgroups.
Japan alone has nearly 100,000 centenarians as of September 2025, an increase of over 4,600 from the previous year. The prefecture of Shimane has the highest concentration at roughly 169 centenarians per 100,000 people, which is 3.5 times the rate of the lowest-ranking Japanese prefecture. No other large country comes close to these numbers.
Blue Zones: Five Pockets of Extreme Longevity
Beyond national averages, researchers identified five specific communities where people live measurably longer than anywhere else. These “Blue Zones,” a concept developed by Dan Buettner and published in the American Journal of Lifestyle Medicine, include Okinawa (Japan), Sardinia (Italy), Ikaria (Greece), the Nicoya Peninsula (Costa Rica), and Loma Linda, California (specifically its Seventh-day Adventist community). Despite being spread across four continents and vastly different cultures, these populations share a core set of habits.
The longest-lived people in these regions don’t exercise in the way most Westerners think of it. They don’t go to gyms or run marathons. They live in environments that require constant low-level movement: gardening, walking to errands, doing housework without machines. They eat a plant-heavy diet built around beans, with meat consumed only about five times per month in small portions. They stop eating when they’re roughly 80% full rather than stuffed. They have daily stress-relief rituals, whether that’s prayer, napping, or an evening glass of wine with friends. They maintain tight social networks and a clear sense of purpose, which Okinawans call “ikigai” and Nicoyans call “plan de vida.” Having that sense of purpose alone is associated with up to seven additional years of life expectancy.
Faith-based community involvement also appears repeatedly. Of 263 centenarians interviewed across the Blue Zones, all but five belonged to a religious community. The specific religion didn’t matter. Regular attendance at faith-based services four times a month was linked to 4 to 14 extra years of life.
Hong Kong: Urban Design as a Health Tool
Hong Kong’s position at the top of global rankings surprises people because it’s one of the most densely populated places on earth. But that density is actually part of the explanation. Researchers point to the city’s “enabling environment” as a key driver: the streets are safe, public transit is clean and starts at about 60 US cents per ride, and footbridges and elevators make walking the easiest way to get around. When everything you need is walkable, you walk.
Despite the concrete skyline, Hong Kong is greener than most cities, with mountains and beaches a short distance from the center. It’s common to see groups of older people practicing tai chi in parks early in the morning, then sharing meals together afterward. The city also sits at a marine and land gateway to the rest of Asia, giving residents easy access to fresh fish, fruit, and vegetables that form the backbone of local cuisine. Almost all districts participate in the WHO’s global network of age-friendly cities, which means urban spaces are intentionally designed to support older residents. Close family networks, typical across many Asian cultures, provide both financial and emotional support as people age.
Okinawa: Eating Less, Living Longer
Okinawa’s traditional diet is one of the most studied in longevity research. The cornerstone practice is “hara hachi bu,” a 2,500-year-old Confucian principle meaning “eat until you’re 80% full.” In practice, this means looking at your plate, estimating what would make you feel full, and stopping at roughly two-thirds of that amount. The goal is to feel satisfied and no longer hungry, not stuffed.
The traditional Okinawan diet is built on sweet potatoes, tofu, seaweed, and vegetables, with very little meat or processed food. Okinawans eat their smallest meal in the late afternoon or early evening and then don’t eat again for the rest of the day. This combination of caloric moderation and nutrient-dense food is thought to reduce the chronic inflammation that drives most age-related diseases.
Sardinia’s Unusual Pattern
Sardinia’s mountainous interior villages have a striking demographic quirk: the ratio of male to female centenarians is roughly equal. Worldwide, women outnumber men among centenarians by about three to one. Researchers have looked for a genetic explanation, but multiple studies have failed to identify longevity-specific gene variants in the Sardinian population. This makes it more likely that the explanation lies in lifestyle, diet, and community structure rather than DNA.
The Sardinian Blue Zone villages are small, tight-knit, and extremely safe, with homicide rates well below the European Union average. Older people remain embedded in daily social life rather than being separated into care facilities. The men traditionally work as shepherds, covering miles of hilly terrain on foot well into old age. Evening social gatherings with a glass of locally produced Cannonau wine are a daily ritual, not an occasional indulgence.
Ikaria: The Island Where People Forget to Die
On the Greek island of Ikaria, researchers studying residents over 80 found that nearly all of them napped regularly at midday, and every single participant over 90 reported sleeping at noon. This isn’t just a comfort habit. In a large Greek study of over 23,000 people, regular midday napping was linked to lower risk of death from heart disease, possibly through reduced stress. Ikarians who napped regularly also scored significantly lower on depression scales compared to those who didn’t.
Daily life on Ikaria involves physical activity baked into the terrain (it’s mountainous), a traditional diet heavy on wild-gathered plants and herbal teas, and very low rates of smoking. Social connection is constant. The combination of mountain living, plant-based eating, regular napping, and minimal depression paints a picture of a culture where the conditions for long life aren’t achieved through effort but are simply the default way of living.
Loma Linda: Religion as a Longevity Framework
Loma Linda, California, is the only Blue Zone in the United States, and its long-lived population is specifically the community of Seventh-day Adventists. The Adventist Health Study found that men in this community lived 7.3 years longer than the average Californian man, and women lived 4.4 years longer. Vegetarian Adventists did even better: men gained 9.5 extra years and women 6.1.
Five factors explained most of the difference: never smoking, maintaining a healthy body weight, exercising regularly, following a vegetarian diet, and eating nuts frequently. The religious framework matters because it provides structure and social reinforcement for these behaviors. Sabbath observance creates a built-in weekly day of rest and community gathering, and the church actively discourages alcohol and tobacco use.
Nicoya: Minerals in the Water
Costa Rica’s Nicoya Peninsula is a longevity hotspot particularly for elderly men. One factor that distinguishes it from other Blue Zones is the local water supply, which contains unusually high concentrations of calcium and magnesium. Combined with the traditional diet of corn tortillas prepared through nixtamalization, a process that cooks corn kernels with lime and adds significant calcium, Nicoyan elders get bone-strengthening minerals from sources that most modern populations don’t have access to. This may help explain why Nicoyan men maintain physical independence later in life than their peers elsewhere in Central America.
The Tsimane: A Different Kind of Heart Health
The Tsimane people of the Bolivian Amazon aren’t typically included in Blue Zone lists, but they offer a compelling comparison. This indigenous group of forager-farmers shows virtually no signs of obesity, diabetes, hypertension, or coronary heart disease. Their physical activity levels are consistently higher than those of industrialized populations, with men classified as “vigorously active” and women as “moderate to active” based on daily energy expenditure.
What’s notable is that the Tsimane don’t do anything that looks like formal exercise. Their activity comes from walking, farming, fishing, and daily subsistence tasks. Researchers found that their activity levels were about 0.1 to 0.3 units higher than industrialized populations on standard physical activity scales, but similar to other subsistence-oriented groups around the world. The key difference from Western populations wasn’t the presence of vigorous exercise but the near-total absence of sedentary time. Growing evidence suggests that reducing time spent sitting may matter as much as or more than adding structured workouts.
What These Cultures Have in Common
The specifics vary, but the pattern is remarkably consistent across every long-lived culture. Physical movement is woven into daily life rather than isolated into gym sessions. Diets are plant-heavy, calorie-moderate, and built around whole foods. Social ties are deep and maintained daily, not weekly. Older people remain part of the community rather than being separated from it. Stress-relief practices, whether napping, praying, or socializing over wine, happen every day without exception.
Genetics plays a smaller role than most people assume. Researchers studying Sardinian centenarians found no excess of known longevity-related gene variants, and the same pattern holds in other Blue Zones. The dramatically increasing power of DNA analysis may eventually identify rare genetic contributors, but the current evidence points overwhelmingly to lifestyle, diet, and social structure as the primary drivers. The cultures that live longest aren’t doing one extraordinary thing. They’ve built environments where the healthy choice is the easy choice, and they’ve done it for generations.