The 10 Questions That Move a Life Expectancy Estimate First

Age matters, but smoking, activity, location, chronic disease, sleep, blood pressure, and diet quickly change a longevity estimate.

A good life expectancy calculator should not start with trivia. The first questions need to identify the highest-signal inputs: current age, sex, country and city, smoking status, BMI, activity, diet pattern, sleep, blood pressure, and major chronic disease.

These inputs are not perfect. They are a practical baseline. The estimate becomes more useful when optional questions add context around work, social connection, stress, preventive care, family history, air quality, alcohol, and daily movement.

The purpose is not to predict a specific date. The useful output is directional: which factors are pulling the estimate down, which ones are protective, and where a realistic improvement plan could start.