The Elio Score
A single number from 0–100 that captures how well you're operating right now — what we call Healthspan. It rolls up five pillar scores: Hair, Skin, Weight, Performance and Longevity. Each pillar is also 0–100, built from the data we have for you. The goal isn't a perfect 100, it's a steadily improving baseline.
How a pillar is built
pillar = (wearable_score * 1.0 + Σ(marker_score_i * marker_weight_i))
/ (1.0 + Σ marker_weight_i)
Healthspan = mean(available pillar scores)- Wearables anchor every pillar with a fixed weight of 1.0.
- Each blood marker adds its configured weight on top.
- No bloods → pillar is the wearable proxy. No wearables → weighted pathology only.
- Missing pillars are dropped from Healthspan, never zeroed.
Marker score curve
Each marker scores 100 inside its Elio optimal range, then tapers linearly to 0 at the hard bounds, and 0 beyond. Elio's optimal range is tighter than a lab's reference range: the lab range answers "are you sick?", Elio's range answers "is this marker actively supporting the pillar?".
Markers we read today
| Marker | Unit | Optimal | Hard bounds | Pillars (weight) |
|---|---|---|---|---|
| Ferritin | ug/L | 70–200 | 15–400 | hair 0.5 · performance 0.15 · longevity 0.05 |
| Vitamin D | nmol/L | 100–150 | 25–250 | skin 0.3 · hair 0.2 · longevity 0.1 |
| TSH | mIU/L | 0.8–2.5 | 0.1–6 | hair 0.3 · weight 0.1 · performance 0.1 |
| HbA1c | % | 4.8–5.4 | 4–9 | weight 0.5 · longevity 0.3 |
| Fasting glucose | mmol/L | 4–5.4 | 3–11 | weight 0.2 · longevity 0.2 |
| ApoB | g/L | 0.4–0.8 | 0.3–1.6 | longevity 0.4 |
| hs-CRP | mg/L | 0–1 | 0–10 | longevity 0.25 · skin 0.2 · performance 0.1 |
| Testosterone | nmol/L | 15–30 | 5–40 | performance 0.25 · hair 0.1 · longevity 0.05 |
Wearable inputs
- Sleep score (7-day average), passed through 0–100.
- HRV (7-day average), normalised 20 → 120 ms.
- Resting heart rate (7-day average), inverse of normalised 40 → 80 bpm.
- Steps (7-day average),
min(100, steps / 100). - Weight stability over 7 days — 100 at sd ≤ 0.3 kg, 0 at sd ≥ 2 kg.
Versioning
Every change to a weight, range or formula bumps SCORE_VERSION. Each row in our derived scores table records the version it was computed under, so historical scores stay comparable.
What's your score?
Start your intake, connect a wearable and upload a recent blood test to see your Healthspan number.