Life Expectancy Calculator
Estimate Life Expectancy
Estimate remaining life expectancy based on demographic and lifestyle factors.
years
kg/m²
Formula
Estimated LE = Baseline_LE(sex) + Σ(lifestyle_adjustments). Adjustments include: smoking (-10 to 0), exercise (-3 to +4), BMI (-8 to 0), alcohol (-5 to +1), diet (-3 to +4), family history (-4 to +3), chronic conditions (-2.5 per condition).
Frequently Asked Questions
How accurate is a life expectancy calculator?
Life expectancy calculators provide rough estimates based on population averages and known risk factors. They cannot predict individual outcomes. Actual lifespan depends on genetics, access to healthcare, environmental factors, and unforeseen events.
What factors most influence life expectancy?
The strongest modifiable factors are smoking (can reduce life expectancy by 10+ years), obesity, physical activity, alcohol consumption, and diet quality. Non-modifiable factors include genetics, sex, and pre-existing medical conditions.
What is healthy life expectancy?
Healthy life expectancy (HALE) is the number of years a person can expect to live in good health, free of disability or chronic disease. It is typically 10-15% shorter than total life expectancy.
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