Twelve lifestyle levers that population research consistently ties to healthy aging. Every adjustment shown. Then the part that matters: how many years are still on the table.
One email. A week-by-week plan built from your top three levers, and the research behind each — no fluff, no daily spam.
Biological-age tests measure biomarkers such as DNA methylation from a blood sample. This is not that. Wellness Age starts at your chronological age and moves it up or down for each lifestyle factor that large population studies consistently associate with healthy aging — then shows you every adjustment, so the math is never a black box. It's an educational estimate, bounded at ±20 years, designed to answer one question well: which of my habits is costing me the most, and what would change if I fixed it?
Because the effect size is enormous and almost every consumer calculator skips it. Meta-analyses of over 300,000 people put lack of social connection on the scale of smoking and above obesity as a mortality risk factor. It's also one of the most changeable inputs on this page.
BMI can't tell muscle from fat and ignores where fat sits. Waist-to-height ratio tracks central adiposity — the kind tied to metabolic risk — and the "keep your waist under half your height" rule holds across sexes and ethnicities. If you enter a waist measurement, we use it instead of BMI, not in addition.
Not directly, and we won't pretend otherwise — no supplement appears in the model. Where a lever has supplement research behind it (vitamin D status, creatine for strength and lean mass), we point you to it as a supporting note. The levers themselves are sleep, movement, food, people and habits.
Everything is computed in your browser. Your answers are stored on your device only so you can come back and re-check. If you enter an email for the plan, that's the only thing that's sent — and only when you click Send.