What is a Longevity Score?

A Longevity Score (0–100) is a composite metric that evaluates key health markers across five domains: cardiovascular fitness, metabolic health, strength, sleep quality, and stress management. Higher scores indicate better alignment with longevity research and lower disease risk.

How is the Longevity Score calculated?

The score uses weighted averages of biomarkers: VO₂max and resting heart rate (cardio), HbA1c and lipid panel (metabolic), grip strength and functional tests (strength), sleep duration and efficiency (sleep), and HRV or stress markers (stress). Each domain contributes 20% to the total score.

What biomarkers should I track for longevity?

Key biomarkers include: VO₂max (cardiovascular fitness), resting heart rate, HbA1c (blood sugar), LDL/HDL cholesterol, triglycerides, grip strength, sleep duration and efficiency, and heart rate variability (HRV). Annual blood work plus quarterly fitness tests provide good tracking.

How can I improve my Longevity Score?

Focus on: Zone 2 cardio (150+ min/week), resistance training (2–3x/week), 7–9 hours quality sleep, Mediterranean-style diet, stress management (meditation, nature), and maintaining healthy BMI. Consistency matters more than intensity for most metrics.

What is a good Longevity Score?

Scores 80–100 indicate excellent alignment with longevity best practices. 60–79 is good with room for improvement. 40–59 suggests significant risk factors. Below 40 indicates high risk and prioritized intervention. Use the score as a progress tracker, not a diagnostic tool.

How often should I update my Longevity Score?

Update daily inputs (sleep, exercise, stress) for real-time tracking. Update biomarker data quarterly or semi-annually. Annual comprehensive blood work provides the most accurate metabolic and cardiovascular assessment. Regular tracking reveals trends and motivates consistency.

Does the Longevity Score predict lifespan?

The score correlates with disease risk and healthspan but does not predict exact lifespan. It's a screening tool that identifies modifiable risk factors. High scores indicate lower risk of age-related diseases. Consult healthcare providers for personalized medical advice.

Longevity Progress Tracker – Daily Longevity Score

Today's Check-In

Sleep last night (hours)

Exercise today

Diet quality today

Stress level today

Bonus habits completed

Sauna session (15+ min) Morning sunlight (10+ min before 10am) Completed 16h+ fast Alcohol consumed today Longevity supplements taken

Today's Longevity Score

0/100

–

Sleep

0

Exercise

0

Diet

0

Stress

0

Today's Recommendations

// The Score

Longevity Score = Sleep + Exercise + Diet + Stress + Bonus − Penalties

Maximum: 100 points · Bonus habits add 3–5 points each · Alcohol deducts 10 points

10 pts

Sleep (max)

7–9 hours of quality sleep, well rested

15 pts

Exercise (max)

Zone 2 cardio + resistance training combined

15 pts

Diet (max)

Optimal whole-food, plant-rich, low sugar diet

13 pts

Bonus (max)

Sauna, fasting, sunlight, supplements combined

Consistency Over Perfection

90/100 Repeated Beats 100/100 Occasionally

Longevity is not determined by a single intervention — it is built from thousands of daily decisions compounded over years. A 90/100 day repeated consistently beats an occasional 100/100 followed by neglect. The score is designed to track cumulative consistency, not perfection. Track trends, not days — your 30-day average matters more than any single day.

// Why daily tracking works

The Power of Consistent Daily Habits

Longevity is not determined by a single intervention — it is built from thousands of daily decisions compounded over years. A 90/100 day repeated consistently beats an occasional 100/100 followed by neglect. The score is designed to track cumulative consistency, not perfection.

Sleep, exercise, and diet account for roughly 70% of the score. These three factors have the most robust evidence for extending biological healthspan and reducing all-cause mortality risk.

Track trends, not days: A single day's score is less meaningful than your 30-day average. Use this to identify patterns — which days do you score low? What habits get dropped under stress?

// What each factor represents

The Evidence Behind Each Input

Sleep — the master regulator

Consistently sleeping under 6 hours doubles dementia risk and raises all-cause mortality by ~30%. 7–9 hours is the evidence-based target. Quality matters as much as duration: dark, cool, consistent schedule.

Exercise — the strongest longevity drug

Zone 2 cardio builds mitochondrial density and VO₂ max — the strongest predictor of all-cause mortality. Resistance training preserves muscle mass and metabolic rate. Both are necessary.

Diet — information, not just fuel

Ultra-processed food is independently associated with mortality beyond its caloric content. A whole-food, plant-rich diet reduces inflammation, improves the microbiome, and lowers chronic disease risk across decades.

// Common Questions

Frequently Asked Questions

Current research highlights: fasting glucose and insulin sensitivity, HbA1c, blood pressure, hs-CRP (inflammation), VO₂ max (cardiorespiratory fitness), grip strength, telomere length, and epigenetic clock scores (GrimAge, DunedinPACE). VO₂ max is the strongest predictor of all-cause mortality.

Chronological age is simply how many years you've lived. Biological age reflects how your cells, organs, and systems are ageing relative to population averages. You can be 50 chronologically but have a biological age of 42 or 58 depending on lifestyle, habits, and health markers.

For most people, an annual comprehensive blood panel plus periodic fitness testing (VO₂ max, grip strength) is sufficient. If actively implementing changes, quarterly tracking helps you see what's working. Avoid over-testing — trend tracking is the goal, not daily biomarker obsession.

Yes — multiple studies show measurable epigenetic age reductions from exercise, dietary changes, and sleep optimisation over 3–12 months. VO₂ max can improve 15–25% with consistent aerobic training. Metabolic biomarkers respond rapidly to dietary changes within weeks.

Research consistently points to cardiorespiratory fitness (VO₂ max) as the strongest modifiable predictor of longevity. Consistent aerobic exercise — especially Zone 2 training 3–5 times per week — has a larger effect on mortality risk than almost any other lifestyle change.

The evidence strongly supports 7–9 hours for most adults. Consistently sleeping under 6 hours is associated with significantly elevated dementia and cardiovascular disease risk. 'Sleep debt' cannot be fully repaid at weekends — consistent nightly duration is more important than occasional long sleep.

Finnish cohort studies (Laukkanen et al.) found 4–7 sessions per week associated with 40% reduction in all-cause mortality and 60% reduction in fatal cardiovascular events vs. once-weekly use. The mechanism likely involves heat-shock protein activation, cardiovascular training, and inflammation reduction.

Intermittent fasting (IF) involves restricting eating to defined windows (e.g., 16:8 = 16 hours fasting, 8 hours eating). Evidence shows improvements in insulin sensitivity, inflammation markers, and metabolic health. Whether it extends lifespan beyond these metabolic benefits in humans remains under investigation.

// Methodology & References

Formula & Calculation Method

Composite Longevity Score

Score = w₁·Cardio + w₂·Metabolic + w₃·Strength + w₄·Sleep + w₅·Stress

Cardio — Cardiovascular fitness markers (VO₂max, resting heart rate)
Metabolic — Metabolic health (HbA1c, fasting glucose, LDL, triglycerides)
Strength — Grip strength, sit-to-stand performance
Sleep — Sleep duration, quality (sleep efficiency %)
Stress — HRV, cortisol patterns

Source: Adapted from Lifespan.io biomarker panels and Attia, 'Outlive' (2023)

Authoritative Sources & Standards

CDC: CDC adult exercise guidelines: ≥150 min/week moderate aerobic + 2 strength sessions. Adherence cuts all-cause mortality risk by 30–35% (Dose-response meta-analysis, JAMA 2020). → CDC

Expert Insights & Research

VO₂max is the single strongest predictor of all-cause mortality — outperforming smoking, hypertension, and diabetes status combined. Improving VO₂max from 'low' to 'below average' cuts mortality risk ~50%.

— Mandsager et al., JAMA Network Open (2018) — 122,007 adult participants (2018)

Grip strength below ~26kg (men) / ~16kg (women) is associated with 1.5–2x all-cause mortality. Loss of muscle mass (sarcopenia) accelerates after age 50 by ~1–2%/year if not actively countered.

— Leong et al., The Lancet (2015) — PURE Study, 142,861 participants (2015)

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