The Six Pillars of Lifestyle Medicine: What the Evidence Means for Practice in Viet Nam

The six pillars are probably the most recognizable part of Lifestyle Medicine: nutrition, physical activity, restorative sleep, stress management, connectedness, and avoidance of risky substances. They are easy to remember, which is useful. But that simplicity can also create a misunderstanding. Lifestyle Medicine is not the practice of handing every patient the same six-item checklist.

The pillars are better understood as interconnected domains of health behavior that can be assessed and, when appropriate, used therapeutically within evidence-based healthcare. What matters is not simply whether a behavior appears “healthy,” but how strong the evidence is for a particular intervention, how it relates to the patient's condition, what intensity is appropriate, whether it is feasible, and how change can be sustained over time.

That distinction is especially important in Viet Nam. International evidence provides an essential foundation, but food culture, working patterns, family life, urbanization, environmental conditions, healthcare access, and professional scope of practice all shape what implementation looks like in real life.

The six pillars now have clearer global definitions

The language used to define Lifestyle Medicine and its pillars has continued to evolve. In 2025–2026, the Lifestyle Medicine Global Alliance refined the core definition and pillar definitions through an international review and Delphi consensus process. A 2026 publication documented those refinements and established an ongoing governance process under the International Board of Lifestyle Medicine Scientific Advisory Committee for maintaining and updating the definitions and competencies in the future. The model is intended to preserve a common global framework while allowing regions to develop context-specific extensions when needed.

The refined definition describes Lifestyle Medicine as a medical discipline using evidence-based therapeutic lifestyle interventions, centered on a whole-food, plant-predominant eating pattern, regular physical activity, restorative sleep, effective stress management, connectedness, and avoidance of risky substances, to prevent and treat noncommunicable disease and, in appropriate circumstances, support disease reversal.

Two points are important here. First, the pillars are intended to be therapeutic, not simply general wellness advice. Second, they sit within healthcare rather than outside it. Medication, surgery, rehabilitation, psychological care, and other established treatments remain important whenever clinically indicated.

The pillars also interact with one another. Poor sleep can affect appetite, mood, and willingness to exercise. Chronic stress can influence sleep, alcohol use, eating behavior, and relationships. Supportive relationships may make it easier to maintain physical activity or other long-term changes. Assessing each pillar individually can be useful, but treating them as six completely independent behaviors would miss much of how people actually live.

1. Nutrition: dietary pattern matters more than a single “healthy food”

The refined nutrition definition places emphasis on a wide variety of whole and minimally processed plant foods, including vegetables, fruits, whole grains, legumes, nuts, and seeds. It also recommends minimizing red and processed meats, foods high in saturated fat, and ultra-processed foods high in added sugars, refined carbohydrates, fats or oils, and excess sodium.

This does not mean that Lifestyle Medicine can be reduced to a branded diet, nor that every patient should be given an identical eating plan. The 2025 Lifestyle Medicine Core Competencies require healthcare professionals to understand evidence relating to both plant-predominant and non-plant-predominant dietary patterns and to appraise how the level and type of food processing relate to health outcomes.

In clinical practice, dietary pattern is usually more meaningful than a single food or nutrient in isolation. What a person eats regularly, what those foods replace, overall nutritional quality, energy balance, medical conditions, medications, preferences, and individual nutritional needs all matter.

Vietnamese food culture offers useful foundations for healthy eating, including the widespread use of fresh ingredients, vegetables, herbs, and other plant foods. At the same time, the food environment is changing. In September 2026, the World Health Organization highlighted increasing consumption in Viet Nam of ultra-processed foods, fast foods, and sugar-sweetened beverages, many of which are high in salt, sugar, or unhealthy fats.

Salt deserves particular attention. Viet Nam's 2021 national STEPS survey estimated average salt intake at 8.1 grams per day, substantially above the World Health Organization recommendation of less than 5 grams. The survey also found that 59% of adults aged 18 to 69 consumed fewer than five servings of fruit and vegetables per day.

For a Vietnamese patient, useful nutrition counseling may therefore involve very practical questions. How much fish sauce, soy sauce, seasoning powder, or other salty condiment is used? How often are meals eaten outside the home? Are vegetables, legumes, whole grains, nuts, or seeds regularly included? How frequently are sweetened drinks, fast foods, or packaged foods consumed? What foods are affordable, available, acceptable, and realistic for the household?

Evidence needs to meet the patient's kitchen, family, budget, and daily routine.

2. Physical activity: exercise matters, but so does reducing inactivity

The refined physical activity definition goes beyond simply telling people to “exercise.” It includes regular aerobic and resistance activity, flexibility exercises, balance or functional movement, together with reducing sedentary behavior.

That distinction matters clinically. Walking is valuable, but it does not fully replace resistance exercise. Strength training becomes increasingly relevant with aging and the preservation of muscle and physical function. Balance and functional movement may be especially important for some older adults. At the same time, someone who completes a workout but spends much of the remaining day seated may still accumulate substantial sedentary time.

In Viet Nam, 22.2% of adults aged 18 to 69 surveyed in 2021 did not meet World Health Organization recommendations for physical activity. This represented an improvement from 28.1% in 2015, but physical inactivity remains relevant at population level.

Advice still needs context. “Exercise more” may be difficult for someone working long shifts, commuting for several hours, living in an area without safe walking space, having mobility limitations, or working outdoors in extreme heat. Heat is itself an important environmental and occupational health hazard and can worsen cardiovascular disease, diabetes, respiratory disease, and other conditions.

A useful physical activity intervention therefore considers baseline activity, clinical risk, preferences, environment, functional capacity, and opportunities for movement throughout the day. The goal is not simply to prescribe a number of minutes. It is to help develop a pattern of movement that is appropriate, achievable, and sustainable.

3. Restorative sleep: duration matters, but quality and timing matter too

For most adults, the refined Lifestyle Medicine definition describes restorative sleep as 7 to 9 hours of high-quality sleep each night, aligned with circadian rhythms and sufficient to support physical and psychological recovery.

Sleep can easily be reduced to one instruction: “get eight hours.” Clinical reality is more complicated. A person may spend eight hours in bed and still have poor-quality sleep because of obstructive sleep apnea, insomnia, restless legs syndrome, pain, alcohol use, medication effects, anxiety, shift work, noise, heat, or other causes.

The Lifestyle Medicine Core Competencies therefore go beyond sleep hygiene. They include assessing sleep, recognizing common sleep disorders, using appropriate lifestyle-based interventions, and knowing when further investigation or referral to a sleep specialist is appropriate.

Unlike tobacco use, alcohol use, diet, physical activity, overweight and obesity, blood pressure, glucose, and blood lipids, sleep was not one of the core risk-factor domains reported in Viet Nam's 2021 national STEPS survey. That does not mean sleep problems are unimportant or uncommon in Viet Nam. It simply means healthcare professionals should be cautious about making national prevalence claims without appropriate data.

In practice, asking about sleep duration, regularity, perceived quality, daytime sleepiness, snoring, shift work, and relevant symptoms may be more useful than simply telling every patient to sleep longer.

4. Stress management: the goal is not to eliminate stress

Stress management is sometimes presented as though a healthy person should be free from stress. That is neither realistic nor the purpose of this pillar.

The refined definition focuses on strategies that help people recognize, reduce, and manage stress, regulate emotional responses, build resilience, and support whole-person positive health.

Stress is part of life. Work, caregiving, finances, illness, relationships, uncertainty, and major life events cannot always be removed. What may be modifiable is how stressors are recognized, how people respond, which resources are available, and whether harmful coping patterns develop.

Lifestyle Medicine competencies therefore include evidence-based approaches such as mindfulness-related strategies, cognitive behavioral techniques, positive psychology, and resilience-building. They also require professionals to recognize when symptoms such as anxiety or depression warrant formal mental-health assessment or specialist care.

The same boundary matters in Viet Nam. Lifestyle Medicine should not medicalize every period of ordinary stress, but significant psychological distress should not be reduced to advice to “relax,” meditate, or think positively either. Stress management belongs within person-centered care. It is not a substitute for appropriate mental-health treatment.

5. Connectedness: health is also relational

Connectedness is often the pillar that surprises people most when they first encounter Lifestyle Medicine. The refined definition describes it as strengthening and maintaining relationships and connections that foster meaning, purpose, and emotional well-being. These may include family, friends, community, nature, pets, or an individual's spiritual beliefs.

The important point is not that everyone needs a large social network. Quantity and quality are different. Meaningful and supportive relationships may look very different across individuals, cultures, and stages of life.

Connectedness may be particularly relevant in Viet Nam, where family members are often involved in daily life and may also play an important role in supporting healthcare and behavior change. But it would be a mistake to assume that family or community structures protect everyone from loneliness or social isolation. Older adults living alone, people who migrate for work, caregivers, people living with chronic illness, and others can experience very different patterns of connection and isolation.

For clinicians, connectedness can therefore become a legitimate part of a health conversation. Who supports this person? Does the household make behavior change easier or harder? Is social isolation affecting well-being? Are there family, peer, community, or other resources that might help?

These questions also create natural links with approaches such as group care and, where locally appropriate, social prescribing.

6. Avoidance of toxic substances: broader than smoking

Public-facing Lifestyle Medicine materials have commonly used terms such as risky substance avoidance. The refined 2026 pillar definition uses the title avoidance of toxic substances, describing the reduction or elimination of consumption of or exposure to substances that may harm the body or mind through toxicity, addiction, physiological disruption, or other adverse effects. Interestingly, the refined overall Lifestyle Medicine definition still uses the phrase “avoidance of risky substances.”

In clinical practice, tobacco and harmful alcohol use are particularly important, while the competency framework also addresses vaping and other commonly used or illicit substances.

Viet Nam continues to face a substantial tobacco burden. In the 2021 STEPS survey, 20.8% of people aged 15 years and older were current smokers, including 41.1% of men and 0.6% of women. In addition, 37.3% reported exposure to second-hand smoke at home during the previous 30 days.

The clinical response should involve more than telling a smoker that smoking is harmful. Screening, assessment of dependence and readiness to quit, evidence-based behavioral support, appropriate pharmacotherapy when indicated and available, follow-up, and referral are all elements of evidence-based tobacco cessation care.

Alcohol requires similarly careful communication. Avoiding risky or toxic substances should not become a moral judgment about patients. The goal is to identify harmful exposure, communicate risk accurately, and support appropriate change using evidence-based approaches.

The pillars are interconnected, but they are not identical treatments

A common mistake is to assume that because there are six pillars, every patient needs equal intervention across all six. That is not how clinical care works. A patient with uncontrolled hypertension, high sodium intake, tobacco use, and adequate sleep may need very different priorities from someone with diabetes, severe physical inactivity, shift-work sleep disruption, and social isolation. A person who already has a high-quality dietary pattern does not need a nutrition intervention merely because nutrition is one of the pillars.

Clinical relevance, available evidence, patient priorities, readiness for change, safety, and feasibility should determine where attention begins.

The evidence is also not identical across pillars, diseases, and outcomes. The relationship between tobacco cessation and cardiovascular risk has a different evidence base from that supporting a specific stress-management technique for a particular clinical outcome. Saying that all six pillars matter does not mean that every intervention within every pillar carries the same certainty, effect size, or therapeutic indication.

Lifestyle Medicine remains evidence-based only if those differences are acknowledged.

Behavior change connects all six pillars

Knowing what healthier behavior looks like is rarely enough to produce sustained change. This is why the Lifestyle Medicine Core Competencies devote substantial attention to behavior-change science, including motivational interviewing, therapeutic alliance, patient-centered action planning, health coaching approaches, cognitive behavioral strategies, self-efficacy, relapse prevention, positive psychology, and family or social support.

The clinical question is therefore not only, “What should this patient change?”

It is also, “What is this person ready and able to change? What matters to them? What barriers exist? What support could make the change sustainable?”

That difference separates a therapeutic Lifestyle Medicine approach from a list of instructions.

What do the six pillars mean for practice in Viet Nam?

For Viet Nam, the six-pillar framework can provide a useful structure for assessment, education, and professional development. It may help clinicians remember domains that are easily overlooked in conventional consultations, particularly sleep, stress, connectedness, and behavior-change support.

But the framework should not be imported mechanically. Nutrition needs to reflect Vietnamese foods and eating practices. Physical activity recommendations need to take account of work, environment, heat, mobility, and access. Sleep discussions should distinguish inadequate sleep opportunity from clinical sleep disorders. Stress management needs to respect cultural context and appropriate mental-health referral. Connectedness should recognize both sources of social support and possible isolation. Substance-use care should follow evidence-based approaches and relevant Vietnamese professional and legal requirements.

The broader context matters too. The 2025 Lifestyle Medicine Core Competencies formally added social determinants of health and strengthened the relationship between Lifestyle Medicine, planetary health, and sustainable living. A recommendation can be scientifically reasonable yet have little practical value if it is unaffordable, inaccessible, culturally inappropriate, or unrealistic within someone's working and living conditions.

For Vietnamese healthcare organizations, the six pillars are likely to be most useful when integrated into existing clinical care rather than packaged automatically as a separate wellness service. A primary-care clinic might incorporate structured lifestyle assessment into chronic-disease reviews. A hospital might improve referral pathways to nutrition, physiotherapy, mental-health services, smoking cessation, or other relevant care. Professional education can strengthen behavior-change skills, while quality-improvement projects can examine whether lifestyle risk assessment and follow-up actually occur.

None of these steps requires every healthcare organization to create a dedicated Lifestyle Medicine department. The first objective should simply be better care.

Six pillars, one person

The simplicity of the six pillars is one of Lifestyle Medicine's strengths. They provide a memorable way to organize important health behaviors and help healthcare professionals look beyond a single disease, test result, or prescription. Their real value, however, appears only when the framework is combined with clinical judgment.

Nutrition is not merely “eat healthy.” Physical activity is not simply “exercise more.” Sleep is not just a target number of hours. Stress management is not positive thinking. Connectedness is not having many friends. Avoiding harmful substances requires more than warning someone about risk.

Each pillar involves evidence, assessment, context, behavior change, and, when appropriate, clinical treatment or referral.

For Viet Nam, the opportunity is therefore not to promote six slogans. It is to build the professional capacity to translate these six domains into evidence-based, person-centered, culturally relevant, and clinically responsible care.

That is what the six pillars should mean in practice.

Professional education notice

This resource is intended for professional education and knowledge exchange. It does not constitute individualized medical advice, confer professional certification or scope of practice, or replace applicable clinical guidelines, professional judgment, licensing requirements, or Vietnamese laws and regulations.

References

1. Rea BL, Cheema S, Lanza S, Makinde MT, Matthews S, Palma M, et al. Governance and Update Process for Lifestyle Medicine Core Competencies and Definitions. American Journal of Lifestyle Medicine. 2026;20(7):1116-1123. doi:10.1177/15598276261424740.

2. Rea BL, Cheema S, Lanza S, Makinde MT, Matthews S, Palma M, et al. Lifestyle Medicine Core Competencies: 2025 Update. American Journal of Lifestyle Medicine. 2026;20(3):443-451. doi:10.1177/15598276251379821.

3. Lippman D, Stump M, Veazey E, et al. Foundations of Lifestyle Medicine and its Evolution. Mayo Clinic Proceedings: Innovations, Quality & Outcomes. 2024;8(1):97-111. doi:10.1016/j.mayocpiqo.2023.11.004.

4. World Health Organization Regional Office for the Western Pacific. National survey on the risk factors of noncommunicable diseases in Viet Nam, 2021. Manila: World Health Organization Regional Office for the Western Pacific; 2025.

5. World Health Organization. Speech of Dr Angela Pratt at KOL Workshop on Nutrition and NCDs. 15 September 2026.

6. World Health Organization. Heat and health. Viet Nam. 31 July 2026.

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