Longevity Outlook

Advanced factors

Alcohol +/− up to 5 years

No alcohol — modelled as neutral (contested J-curve benefit excluded).

Diet, sleep & stress +/− up to 8 years

Diet quality

Sleep (hours/night)

Stress (1=calm, 10=extreme)

Body metrics waist · sitting · VO₂ · grip

Waist (cm) optional

Sitting time/day

VO₂ max estimate optional

Grip strength

Social & genetics +/− up to 7 years

Relationship status

Social connections

Parental longevity

Education

Medical conditions 18 conditions

Purpose & wellbeing +/− up to 4 years

Your estimated lifespan

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years

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Time remaining

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Years

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Months

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Days

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Hours

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Mins

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Secs

BirthNow—

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Biological age vs chronological age

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Biological age

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Chronological age

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Lifestyle profile vs. same-age, same-sex, same-country peers

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What if you made a change?

Toggle scenarios to see the combined potential impact. Your projected age updates in real time.

Select a scenario above

+0.0y

additional years

Your priority actions

Current age

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BMI

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Lifestyle delta

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vs country average

Base expectancy

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Period life table

Waist/height ratio

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Life ahead

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of estimated lifespan

BMI cohort distribution

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Percentile: — · Cohort avg: — · Healthy range: 18.5–24.9

UnderweightHealthyOverweightObese

Factor breakdown — years added or removed

Detailed factor analysis

How this model works — sources & methodology

Base life expectancy

Country/sex baselines from WHO Global Health Observatory (2023). Dynamic survival adjustment: base + max(0, (age − base) × 0.3).

Smooth continuous curves

• BMI: polynomial, minimum at 22–23, −9y at 40+. Lancet 2016 Global BMI Collaboration
• Alcohol: neutral ≤7/wk, −0.2y per drink 8–14, −0.3y per drink 15+. J-curve excluded. NEJM 2018 GBD Alcohol
• Sleep: U-curve, optimum 7–8h. Sleep Medicine Reviews 2010
• Exercise / Smoking: JAMA Internal Medicine 2015 BMJ 2004

Biological markers

VO₂ max JAMA 2018 · Grip strength Lancet 2015 · Waist/height ratio Nutrition Research Reviews 2010

Honest limitations

This is a heuristic model, not a clinical prediction. Adjustments are additive approximations; real mortality risk is multiplicative. Treat results as directional.

This tool uses published epidemiological data to produce illustrative estimates only. It is NOT medical advice.
Consult your physician for personalised health assessment and screening recommendations.