01Strong consensus
Sleep
Most adults should begin with a consistent opportunity for 7 or more hours of sleep. Regular timing, morning light, and a dark, quiet room are practical first steps.
Read the guide Evidence-based longevity education
Live longer.
Live more fully.
Clear, practical lessons on the daily conditions that shape health—sleep, movement, food, stress, heat, and human connection.
01 Sources you can open02 Uncertainty made clear03 No product endorsements
A practical field guide
The foundations are not flashy.
That is why they matter.
Longevity is often marketed as a collection of hacks. The stronger case is quieter: build repeatable days around behaviors supported by the best available evidence.
02Strong guidance
Movement
Build toward 150–300 minutes of moderate aerobic activity each week, plus muscle-strengthening work on at least two days. Start below that if needed; consistency wins.
Read the guide03Strong guidance
Plant-forward eating
Center meals on vegetables, fruit, legumes, whole grains, nuts, and seeds. Plant-forward does not require perfection—it means making minimally processed plants the default.
Read the guide04Individualize
Protein, in context
The adult RDA is 0.8 g/kg/day—a reference level, not a universal prescription for every goal or life stage. Source quality, total diet, age, activity, and kidney health all matter.
Read the guide05Strong nutrition case
Fiber & the microbiome
A useful benchmark is about 25 g/day for women and 38 g/day for men ages 19–50. Increase gradually, drink adequate fluid, and favor varied whole-food sources.
Read the guide06Modest evidence
Stress skills
Mindfulness and relaxation practices can help some people with stress and anxiety. They are skills—not cures—and should complement professional care when symptoms persist.
Read the guide07Promising, not settled
Sauna
Sauna may support relaxation and some cardiovascular markers, but much of the longevity evidence is observational. Hydration, heat tolerance, medications, and medical conditions matter.
Read the guide08Core health factor
Belonging
Connection is not an optional extra. Protect recurring time for family, friendship, service, faith, teams, or local groups—the settings where mutual care becomes a habit.
Read the guide09Strong clinical guidance
Prevention & metabolic health
Longevity also depends on ordinary prevention: blood pressure, cholesterol, glucose, vaccines, age-appropriate screening, oral health, vision, and hearing. The right schedule depends on personal risk.
Read the guide10Integrated evidence
Brain health
Protecting the brain is not one supplement or puzzle. Vascular health, movement, sleep, hearing, vision, learning, mood, and social connection work together across decades.
Read the guide11Strong evidence
Risky substances
Avoiding tobacco and nicotine is foundational. Alcohol is not required for health, and even lower intake carries some risk—including a causal relationship with several cancers.
Read the guide12Use for a reason
Supplements, honestly
There is no universal longevity stack. Supplements are most defensible when they correct a documented gap, serve a specific goal, and have a dose, safety check, and stop rule.
Read the guide13Context matters
Hydration & caffeine
Coffee and tea can fit a healthy pattern. Hydration needs change with body size, food, climate, sweat, illness, and medications; forcing a fixed gallon is not a universal target.
Read the guideThe question index
Start with what
you want to know.
Each guide begins with an answer, turns the evidence into a practical next step, and shows where certainty ends.
01How much protein do I actually need?→02How should I eat for a healthier microbiome?→03Does sauna really help people live longer?→04What matters most when my sleep is inconsistent?→05What is the minimum effective amount of exercise?→06Which longevity supplements are actually worth considering?→07Is a gallon of water a day helpful—or too much?→08Which health numbers and screenings matter most?→09What can I do now to protect brain health later?→
Popular questions, calmer answers
Current does not have to mean credulous.
Search interest moves quickly. This library follows the questions people are asking while keeping the answer anchored to evidence, safety, and practical value.
PerformanceZone 2, VO₂ max, strength and creatine→NutritionFibermaxxing, gut health and food diversity→RecoverySleepmaxxing, wearables and magnesium→Healthy agingProtein targets, muscle and plant sources→SupplementsVitamin D, omega-3, magnesium and nitric oxide→TestingGlucose monitors, biological age and useful screening→
7+
hours of regular sleep is the adult starting point.
Not a score to chase. A protected window that supports attention, metabolic health, mood, and safety.
Read the joint consensus statement ↗How this library works
Trust needs
a method.
Every educational piece should help you see what is known, what is uncertain, and what is simply not yet answerable.
Primary sources first
Guidelines, consensus statements, systematic reviews, and public records are linked directly.
Certainty made visible
Established guidance is separated from promising but preliminary evidence.
No universal protocols
Age, health history, medications, culture, access, and goals change what is appropriate.
Corrections stay public
Meaningful errors will be dated, corrected, and explained instead of silently rewritten.
Publishing commitmentReviewed August 2026
Useful work, published consistently.
This library is being built around a simple promise: start with consequential questions, read beyond headlines, link the evidence, and translate it into actions that are realistic enough to repeat.
Articles prioritize consensus statements, public-health guidance, systematic reviews, and primary research. The strength and limitations of the evidence are part of the story—not fine print.
Nothing here is individualized medical care. The goal is to make better conversations possible between readers and qualified clinicians, especially when health history, medications, symptoms, or competing risks make a general recommendation incomplete.
About Sung
A physician by training.
A student of systems
and healthy longevity.
Sung Won, MD, trained in orthopedic surgery and spine surgery and spent more than two decades in clinical care, surgical innovation, and healthcare organization building.
His medical education began at the University of Texas Medical Branch, followed by orthopedic residency at Washington University in St. Louis and fellowship training in spine surgery at William Beaumont Hospital and Washington University.
His additional nutrition education includes completion of the Plant-Based Nutrition Certificate offered by the T. Colin Campbell Center for Nutrition Studies and powered by eCornell. That training informs his plant-forward approach to nutrition and healthy longevity.
His current focus is educational: translating longevity research into practical ideas while being explicit about evidence quality, uncertainty, and the limits of general information.
Nutrition educationPlant-Based Nutrition Certificate — T. Colin Campbell Center for Nutrition Studies, powered by eCornell
Current scopeThis website does not offer appointments, individualized treatment, prescriptions, or medical services.
Read the full biography and credentials →A weekly question for a longer life