Ten factors promoting longevity
Have you ever wondered why some people live longer than others? While there are areas in the world where people are known to live longer than others, the so-called Blue Zones, years of research have identified various reasons why some people live much longer than others.
Drawing concentric blue circles on a map to indicate the cluster of villages in Sardinia, Italy, with the highest concentration of centenarians in the world, and later adding blue circles for other longevity hotspots in the world, have resulted in researching demographers referring to these areas as “Blue Zones”. Residents of these Blue Zones live the longest in the world and enjoy more years of good health, while experiencing a fraction of the diseases that commonly kill people in other parts of the world. These regions are:
- Sardinia in Italy, particularly the Barbagia region.
- The island of Okinawa, Japan.
- The Nicoya peninsula in Costa Rica.
- The island of Icaria, Greece.
- A group of Seventh Day Adventists in Loma Linda, a small city in California.
Decades of research in the Blue Zones and elsewhere in the world have identified the 10 real reasons why some people live much longer than others:
1. Quality of Relationships: The Single Strongest Predictor of Longevity
The Harvard Study of Adult Development started in 1938 and this long-running, 86-year study on adult life has been tracking over 700 men since 1938, and later their descendants, to determine what makes a healthy, happy life. The core finding is that strong, warm relationships are the most critical factor for physical health, mental well-being, and longevity, often outweighing wealth or fame. Quality relationships, not just quantity, are the primary predictor of health and happiness. Strong social connections reduce inflammation and keep people healthier, whereas loneliness acts as a significant harmful stressor, comparable to smoking. Secure, reliable relationships in later life are associated with slower brain decline. The study found that it is never too late to form new, positive relationships that improve life outcomes.
Social isolation was found to be as harmful as smoking 15 cigarettes daily and more detrimental than obesity or physical inactivity. Perceived isolation and loneliness trigger chronic stress responses, which elevates cortisol and inflammation, and is associated with a higher risk of illnesses such as stroke, anxiety, depression, and cardiovascular damage.
According to the Center for Health and Healthcare at the World Economic Forum, studies have shown that strong social connections can provide emotional support, reduce stress, and increase feelings of happiness and belonging, which in turn may have beneficial effects on physical health and promote a longer and healthier life.
People need people, which is more than just a nice saying, as it is the kind of natural medicine that can add years to your life.
2. Purpose in Life: A Key to Longevity
Having a reason to wake up in the morning (called ikigai in Japan) is vital. Having a strong sense of purpose in life is associated with increased life expectancy. Purpose is described as having an overarching aim, or direction, or having a set of goals that add meaning to your life.
A study that tracked nearly 7,000 people for 14 years showed a 15% lower risk of death amongst people with high life purpose. A meta-analysis of 10 studies found a 17% mortality reduction associated with purpose. Health benefits are linked to behavioural pathways, such as better self-care, and biological pathways, such as reduced inflammation and improved immunity.
Retirees without purpose decline rapidly, while those engaged in meaningful activities (gardening, volunteering, caregiving) remain vital into their 90s. People with purpose in their lives tend to be more present in their lives and make more intentional lifestyle choices, which can impact diet, regular exercise, and consistent sleeping patterns.
According to Psychology Today, purpose can be cultivated by finding your ikigai, which translates into “a reason for being”. Find a group of people who are your peers with whom you have built trust and shared interest and affection over the years. Also search for goals or sources of purpose that can motivate you across different life stages. Stay engaged, as purpose often emerges in interactions with others and not sitting in isolation.
Nietzsche (19th century German philosopher) said “S(he) who has a why to live, can bear with almost any how.”
3. Movement: Constant Low-Level Activity Over Intense Workouts
Blue Zones like Okinawa feature natural, frequent movement throughout the day rather than structured exercise, like lifting weights or running marathons. They sit on the floor rather than chairs, which means they perform the equivalent of a body weight squat 30 or 40 times a day, just getting up or down. What they do, they move constantly and they walk to the market, they garden, they clean and are never sedentary for long. It is simply about moving throughout the day rather than sitting for hours and then trying to make up for it with one intense workout.
Modern life has engineered movement out of existence. You sit to commute, to work, to eat, to relax. That is catastrophic for your health. Try to build movement into your life so that it happens automatically. Walk to get your coffee, take the stairs, stand during phone calls. Make movement unavoidable rather than optional.
A study of 17,000+ people found that walking at least 7,000 steps/day were associated with a 50–70% lower mortality risk compared to those who took less than 4,000 steps/day. Another study followed more than 4,800 adults aged 40 to 85 for 10 years and found that increasing activities by just 10 minutes per day was associated with a 7% drop in the number of deaths per year, while adding 20 minutes per day produced a 13% drop, and adding 30 minutes per day produced a 17% drop in the number of deaths per year.
Movement is medicine.
4. Muscle Strength: A Critical Survival Factor
Grip strength is one of the strongest predictors of mortality. A weak grip doesn’t directly cause death, but it correlates with conditions that do. Grip strength represents overall upper body strength and muscle mass, both of which play a crucial role in metabolic health, function, and long-term independence.
A decline in grip strength often indicates broader issues, such as muscle loss (sarcopenia), reduced neuromuscular function, and metabolic decline. As muscle strength diminishes, physical activity declines, which can lead to reduced cardiovascular health, insulin resistance, and an increased risk of falls and injury.
Research shows that grip strength is much more than just a hand function. A study found that each 5kg decrease in grip strength was associated with a 16% higher risk of all-cause mortality and a 21% increased risk of cardiovascular mortality, independent of other health factors. A meta-analysis of 42 studies found that individuals with low grip strength had a 67% higher risk of early death from all causes, compared to those with high grip strength.
Apart from strength, muscle has many other functions such as metabolic regulator, it plays an anti-inflammatory role, and acts as amino acid reservoir during illness.
Ways to measure grip strength include a dynamometer test, where a handheld device is squeezed to assess force input. Another simple but effective method is hanging from a pull-up bar for as long as possible, called the hanging time test. Adults should aim for at least 1 minute.
Grip strength is nowadays considered a biomarker for overall health.
5. Metabolic Stability: Glucose Regulation Matters More than Weight
A healthy metabolism smoothly manages blood glucose spikes after eating, while an unhealthy metabolism results in large glucose fluctuations. Individual glucose responses to identical meals can vary greatly, as indicated by continuous glucose monitors.
Metabolic syndrome is a condition with a cluster of conditions, including high blood pressure, high blood sugar, and excess body fat. It is a primary driver of reduced metabolic stability and higher mortality. Insulin resistance is an early marker of metabolic disease and is driving fat storage, inflammation, high blood pressure, and arterial hardening.
A major study on the association between metabolic syndrome and mortality followed 36,414 adults over 16 years and the findings were published in 2023. The findings showed that the participants with metabolic syndrome were associated with a significantly elevated risk of all-cause, heart disease, and diabetes mellitus (characterised by high blood sugar levels and insulin resistance) mortality. The associations were also significant after adjusting for sociodemographic factors, lifestyle factors, and health status.
A study of 3,000 people that were monitored for over a decade showed that participants in the highest insulin resistance quartile had double the cardiovascular death risk compared to those in the lowest quartile, independent of weight, cholesterol, or blood pressure markers.
A stable metabolism, as indicated by consistent metabolic markers and efficient energy usage, is essential for healthy aging.
Some recommendations in this regard are to prioritize protein and fiber to stabilize blood sugar, doing strength training to improve insulin sensitivity, and to avoid ultra processed food that causes glucose chaos.
6. Circadian Discipline: Timing of Activities Influences Health
The circadian rhythm is a 24-hour internal clock that regulates sleep, hormones, DNA repair, brain waste clearance, and immune timing.
According to a study published in 2026 in the journal Science Advances, circadian rhythm disruption is a potential trigger for various chronic diseases, including cardiovascular, cerebrovascular (conditions that affect blood flow to the brain), and kidney-related disorders.
Cardiovascular disorder: Many cardiovascular functions, such as endothelial function, thrombosis, blood pressure, and heart rate, are now known to be regulated by the circadian clock. The onset of acute myocardial infarction (heart attack due to blocked blood flow to a part of the heart), stroke, arrhythmia (problems with the rate or rhythm of the heartbeat), and other adverse cardiovascular events also exhibits circadian patterns.
Cerebrovascular disorder: Studies have shown that cerebral perfusion is controlled by circadian rhythms, with higher perfusion levels during wakefulness. Cerebral perfusion refers to the net pressure and amount of blood (blood flow) delivered to brain tissue to meet metabolic demands, ensuring that oxygen and nutrients reach neurons. It indicates the difference between mean arterial pressure and intracranial pressure. The interactions between circadian rhythms and cerebrovascular disorders include cell death mechanisms, metabolism, mitochondrial function, inflammation, and immunity. Circadian rhythm also strongly influences stroke risk factors.
Kidney disorder: The kidneys must adapt to intense balance changes in activity and eating caused by circadian rhythms, relying at least partially on a self-sustaining molecular mechanism that continuously adjusts glomerular and tubular function. The glomerular filtration rate (indicating how well the kidneys filter waste from the blood), renal plasma flow (the volume of blood delivered to the kidneys each minute), and renal excretion of water and major urinary solutes all exhibit circadian patterns.
Consequently, the study suggests that altered circadian patterns may increase the risk of mortality from cardiovascular, cerebrovascular, and kidney-related diseases.
In addition, disrupted circadian rhythms increase the risk of mood disorders, cancer, cardiovascular disease, and early death. Shift workers, night owls, and people with irregular sleep schedules have shorter lifespans, despite similar diets and exercise.
Glucose tolerance worsens later in the day; identical meals cause higher blood sugar spikes at night, as insulin release is lower overall and less efficient in response to glucose at night. This is why late-night meals can sometimes lead to higher blood glucose levels as compared to the same meal earlier in the day.
The study demonstrated a significant association between circadian patterns and an increased risk for all-cause mortality, particularly among people aged 40-60 years.
7. Stress Recovery Over Stress Avoidance
Longevity is not about eliminating stress but rather efficiently recovering from it. Long-lived individuals experience hardship but possess nervous system flexibility, which allows activation and downregulation of the stress response as needed.
Research indicates that the ability to recover from stress is just as important, or even more so, than the intensity of the stressor. A meta-analysis of 33 studies of delayed recovery from stress and its association with poor cardiovascular disease outcomes and all-cause mortality supports the contention that slower recovery to baseline after exercise or psychological stress may predict earlier death due to all causes.
Stress can be both good and bad for you – good in the short term when sporadic episodes of acute stress help heighten your performance during adverse or demanding circumstances, and bad in the long term due to the devastating effects of chronic stress on mental and physical health. The difference between good and bad stress lies in the duration of the stress.
Failure to recover from stress leads to the accumulative wear and tear on systems in the body, increasing the risk of heart disease, diabetes, and stroke.
Chromosomes in cells are strands of DNA that house your genes. During cell division each parent cell divides into two new cells, with the original genetic material duplicated. To ensure that the genetic material is passed on correctly to each new cell, the strands of chromosomes have protective caps – called telomeres – at the ends of the strands. Every time a cell divides, some part of the telomere is lost because it fails to replicate completely, and it gets shorter. When the telomeres become too short, the chromosomes can no longer replicate. The cell becomes old and dies. Chronic stress coupled with poor recovery can increase the shortening of telomeres, resulting in accelerated aging and an increase in mortality risk.
Chronic and unmanaged stress is detrimental to one’s health, as it keeps the body in a heightened state of alertness. Heart Rate Variability (HRV) measures stress recovery adaptability. High HRV means better recovery and lower cardiovascular mortality risk, while low HRV means chronic activation and poor health outcomes.
8. Inflammation Control: Combating “Inflammaging”
Chronic low-grade inflammation is referred to as “inflammaging” in some scientific literature.
When the immune system detects any irritation, injury, or infection, the process of acute inflammation starts with mainly white blood cells doing combat against the invaders. The walls of the tiny blood vessels (capillaries) in the affected area expand to bring more blood to the area and at the same time become porous enough to allow white blood cells, fluids, and proteins to leak into the spaces between cells in the affected area. This helps to contain the infected area, which becomes hot, red, and swollen due to the increased blood flow and fluids. It can also be painful when the nerve fibres in the affected area are irritated. Once the invaders have been eliminated, the surviving cells start to regenerate and repair. Acute inflammation gets triggered quickly but is usually short-lived and dissipates within a few hours or days. It is a normal response of the immune system and integral to healing.
Chronic inflammation usually starts with the same response as acute inflammation but then develops into a lingering state of inflammation that can continue for months or even years. The constant combat by white blood cells unfortunately also damages adjoining healthy tissues and organs. This results in a chronic inflammatory process that wears down the body’s resilience by contributing to tissue damage and increasing the risk of various diseases. Chronic inflammation has been linked to many diseases, such as diabetes, heart disease, asthma, rheumatoid arthritis, Alzheimer’s, gastro-intestinal problems, eczema, gout, and even cancer.
Drivers of chronic inflammation includes ultra-processed foods high in sugars and unhealthy fats, sleep deprivation, a sedentary lifestyle, social isolation, chronic stress, excess body fat with visceral fat around the organs, poor oral health, smoking, and alcohol use.
Some suppressors of inflammation include eating whole foods rich in polyphenols and omega-3 fatty acids, regular movement and strength training, getting quality sleep, stress recovery, and deep social connections (linking back to Reason 1: Relationship quality).
In contrast to chronic inflammation, low levels of inflammation are consistently associated with longer, healthier lives. Living longer is much more enjoyable when you’re healthy!
9. How You Eat Matters as much as What You Eat
People living in the various Blue Zones don’t follow the same eating patterns, but have diverse diets, as some are omnivores, some are vegetarians; some drink wine and some abstain. What they do have are common eating patterns, where meals are social events, and eaten together, not alone. Food is eaten slowly and they stop eating before they are full. The Okinawan concept hara hachi bu, meaning “stomach 80% full” promotes longevity and health by encouraging mindful eating and stopping before feeling stuffed, leaving the stomach 20% empty. It is linked to reduced calorie intake, improved digestion, and lower risk of chronic disease. Their largest meal is eaten earlier in the day when metabolism is optimal and there is minimal snacking between meals. Ultra-processed foods are rare or non-existent in Blue Zones and when they are introduced, health benefits disappear within a generation.
In February 2026 Science Advanced published the findings of a longitudinal study on dietary patterns and longevity that followed 103,649 participants for more than 10 years. The study found a significant association between various healthy dietary patterns and prolonged life expectancy. A healthy dietary pattern is associated with an 18 t0 24% lower risk of all-cause mortality.
The study indicates several mechanisms that may underlie the beneficial effects of healthy dietary patterns.
- First, all the dietary patterns emphasize the consumption of vegetables, fruits, and whole grains, which are rich in dietary fiber, flavonoids, and other antioxidants. These components may contribute to improved metabolic regulation, reduced inflammation, and maintenance of gut microbiota homeostasis.
- Second, the encouraged intake of nuts and unsaturated fatty acids aids in the cardiometabolic processes.
- Third, these dietary patterns discourage the consumption of sugar sweetened beverages, as they can promote insulin resistance and disrupt the gut microbiota, as well as promoting hepatic de novo lipogenesis, which refers to the metabolic process in the liver that converts carbohydrates like glucose and fructose into new fatty acids, which in excess can drive fat accumulation.
- Fourth, the results show that a higher dietary glycaemic index was associated with increased all-cause mortality. This association may be attributed to the potential of high–glycaemic index diets to induce blood glucose fluctuation and worsen insulin resistance, thereby contributing to the development of chronic diseases and premature death.
Eating patterns can significantly influence human longevity by lowering the risk of chronic diseases and reducing inflammation. Key strategies in this regard include consuming nutrient-dense, plant-based foods, moderate caloric restriction, and engage in intermittent fasting to optimize metabolism.
10. Making Peace with Mortality: Acceptance and Clarity
Death is an unavoidable part of the cycle of life, yet many of us do everything we can to avoid accepting our mortality. Coming to terms with the inevitability of death can help teach us to live more fully in the here and now, and to cherish every moment of the life we have.
We each have to find our own way to process the reality of dying. Accepting that life has a finite span focuses the attention, enabling us to take stock of our lives and think about the possibilities still ahead.
Acceptance of mortality leads to:
- Prioritizing meaningful relationships and activities.
- Repairing neglected relationships.
- Saying important things without delay.
- Living fully and present in the moment.
On the other hand, as one of Queens’s greatest hits says: “Who wants to live forever?”
Conclusion:
The clue to longevity is changing the focus to healthspan – the number of years you spend in good health during your lifespan. The ten lifestyle factors discussed in this article give a clue to improved healthspan. These lifestyle choices are easily within our reach and form an integrated support for improved metabolic health and thus healthspan.
You need to invest in your relationships. You need a reason to wake up. You need to move your body throughout the day. You need to maintain your muscle. You need to keep your blood sugar stable. You need to respect your circadian rhythm. You need to recover from stress rather than letting it become chronic. You need to control inflammation. Both how you eat and what you eat matter – and they interact.
And you need to make peace with the fact that your time here is limited.
References:
The importance of connections: Ways to live a longer, healthier life. Published 8 December 2024. Harvard T. H. Chan School of Public Health. Harvard Medical School. (www.hsph.harvard.edu)
Scientists have found the key to a healthy, happy life: Our relationships. Published 21 August 2023. World Economic Forum. (www.weforum.org
How social connections increase longevity and healthy aging. Published 29 October 2025. Department of Physiology & Aging. University of Florida. USA. (www.aging.ufl.edu)
The hidden power of purpose for longevity. Published 18 March 2025 in the journal Psychology Today. (www.psychologytoday.com)
Even small increases in daily exercise are tied to longevity. Published 1 May 2022. Harvard Health Publishing. Harvard Medical School. (www.health.harvard.edu)
Moving just 5 more minutes each day could boost longevity. Published 19 January 2026. Medical News Today. (www.medicalnewstoday.com)
Grip strength: A measure that holds onto longevity. Published 18 April 2025. Confluent Health. (www.confluenthealth.com)
Association between metabolic syndrome and mortality: Prospective cohort study. Published September 2023 in JMTR Public Health Surveillance. PubMed Central. National Centre for Biotechnology Information. US National Library for Medicine. National Institutes of Health. USA. (www.ncbi.nlm.nih.gov)
Circadian syndrome and mortality risk in adults aged 40 years and older: A prospective cohort analysis of CHARLS and NHANES. Published April 2025 in the journal Scientific Reports. PubMed Central. National Centre for Biotechnology Information. US National Library for Medicine. National Institutes of Health. USA. (www.ncbi.nlm.nih.gov)
Can exaggerated stress reactivity and prolonged recovery predict negative health outcomes? The case of cardiovascular disease. Published April 2015 in the journal Psychosomatic Medicine. PubMed Central. National Centre for Biotechnology Information. US National Library for Medicine. National Institutes of Health. USA. (www.ncbi.nlm.nih.gov)
Chronic inflammation and longevity. Published online. Virogates. (An in-vitro diagnostic company.) (www.virogates.com)
Healthy dietary patterns, longevity genes, and life expectancy: A prospective cohort study. Published 13 February 2026 in the journal Science Advances. (www.science.org)
Accepting your mortality. Published online. Art of Dying Well. (An organization offering practical and spiritual support when faced with the prospect of death and dying.) (www.theartofdyingwell.org)
HEALTH INSIGHT