A single score out of 100, built on peer-reviewed population-health research. In 4–5 minutes: your estimated health-age, where you stand relative to your age and sex group (WHO / GBD 2021 reference), and the system to act on first.
Blood pressure, glucose, cholesterol: the signals that precede disease by years. The heaviest system in the analysis — because that's where prevention wins the most.
It is the body's main repair window: memory, hormones, immunity. Under six regular hours, every other system pays.
What you eat repeats itself three times a day, for decades: fiber, quality of fats, ultra-processed foods. The overall pattern shapes your trajectory more than any single nutrient.
One of the most effective interventions we know of against aging — heart, muscle, brain. And most of the benefit begins with the first regular minutes.
Isolation carries a mortality risk comparable to smoking 15 cigarettes a day. The air you breathe, for its part, acts without you feeling it. This system measures what weighs in silence.
O estimates a health-age from your answers and the literature, with a stated precision. It makes visible what plays out on your trajectory and offers one action per day. It does not diagnose, and it does not replace your physician.
Free assessment · Full protocol €9, one-time payment
Where other tools track an isolated weight or lab result, O makes visible the five systems that weigh on your healthy years, and pinpoints the one whose improvement will count most.