“Heart age” is having a moment. As the longevity conversation shifts from how long you've lived to how well your body is aging, cardiovascular age has become one of the headline numbers — a single figure that says how old your heart behaves, regardless of your birthday.
Cardiovascular age — also called heart age or vascular age — estimates how old your heart and blood vessels function, compared with your chronological age. It's built from markers that track cardiovascular health: resting heart rate, heart-rate variability, blood pressure where available, and cardio fitness. A 45-year-old with the resting heart rate, recovery and fitness typical of a healthy 38-year-old has a cardiovascular age around 38. It's an estimate, not a diagnosis — but it turns several scattered signals into one number you can actually follow.
The useful part isn't the age itself — it's the gap between your cardiovascular age and your real age. Running a few years younger suggests your heart is in good shape for your age; running several years older is a nudge that some modifiable risk markers are drifting in the wrong direction. A difference of a year or two either way is mostly noise — these estimates aren't precise to the month. It's a gap of roughly three years or more, held over time, that's worth paying attention to.
Cardiovascular age is largely driven by things you can change. Better cardio fitness (a higher VO₂ max), a lower resting heart rate, and healthy heart-rate variability all pull it down. Poor sleep, heavy alcohol, chronic stress, weight gain and a sedentary stretch push it up. That's what makes it motivating rather than fatalistic: unlike your birthday, this number responds to how you live — over weeks and months, not days.
The levers are the unglamorous, well-evidenced ones. Regular zone 2 cardio to build aerobic base, enough quality sleep, keeping alcohol modest, and managing stress all improve the underlying markers — resting heart rate and HRV in particular. Don't expect overnight change: cardiovascular age moves slowly, so the honest way to judge progress is the multi-month trend, not a single reading. This is general information, not medical advice — if your heart age runs well above your real age, treat it as a prompt to talk to a clinician, not a verdict.
Vitra reads your cardiovascular age from your Oura data and shows it right next to your real age, with the gap called out plainly — older, aligned, or younger — and tracked as a trend so you can see which direction it's moving as your habits change. Everything is computed locally on your machine, with the heart-health science cited.
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