How the Longevity Score works.
A 0–100 composite index that tells you where your health optimization is heading — not where you've been, and not how you compare to an average. Less like a grade, more like a compass.
11
Biomarkers
4
Scoring pillars
0–100
Composite index
Real-time
Updates
What is the Longevity Score?
Four pillars. One question: is what you're doing working?
It's built on four pillars: your adherence to the protocols you're running, your key biomarker values, your daily health output, and how consistently you're showing up. Each pillar captures something distinct and non-redundant.
The score updates continuously as your behavior and data change. Upload fresh labs and it reflects that immediately. Go a few days without logging and you'll see it. That responsiveness is the point — the score is a feedback mechanism, not a trophy.
The Vivy 11
11 markers. 4 domains. Built from scratch.
Most health apps score whatever Apple Health gives them. We started with a different question: which markers have the strongest relationship to biological aging, and which ones can you actually do something about?
8 Universal Markers
ApoB
CardiovascularThe cardiovascular gold standard. Counts every atherogenic lipoprotein particle — including small dense LDL-P that standard lipid panels miss.
European Atherosclerosis Society Consensus Statement (2019)
Fasting Insulin
MetabolicThe earliest metabolic distress signal. Insulin resistance develops years before glucose elevates into the pre-diabetic range. Optimal is 2–6 µIU/mL.
Kraft DA (2011)
HbA1c
MetabolicA 90-day average of blood sugar exposure. More stable and informative than a spot glucose reading — gives you the trend, not the moment.
hsCRP
InflammationChronic low-grade inflammation accelerates virtually every aging pathway. hsCRP is the most accessible and actionable marker of inflammatory burden. Optimal is under 1.0 mg/L.
Ridker et al. (NEJM, 2002; JUPITER trial)
Body Fat %
Body CompositionTotal adiposity measured by DEXA with sex- and age-specific optimal ranges. DEXA is the reference standard — it distinguishes tissue types rather than estimating them.
Visceral Fat Area
Body CompositionMetabolically active fat surrounding abdominal organs. Independently associated with insulin resistance, cardiovascular disease, and accelerated biological aging.
Neeland et al. (2019)
Lean Mass
Body CompositionRelative muscle mass as a percentage of body weight. One of the most powerful predictors of longevity and functional independence with age.
Srikanthan & Karlamangla (2014)
Vitamin D
HormonalFunctions more like a systemic hormone than a vitamin. Optimal range is 50–80 ng/mL — meaningfully higher than what most standard labs flag as "normal."
Autier et al. — meta-analyses on cardiovascular, cancer & immune outcomes
Male Hormonal Markers
Testosterone
Central to metabolic health, muscle maintenance, bone density, and cognitive function. Scored with age-stratified ranges (18–29, 30–44, 45–59, 60+).
IGF-1
Declines with age and is linked to metabolic health and body composition. Age-stratified scoring ensures fair comparison across decades.
Female Hormonal Markers
Estradiol (E2)
Primary female sex hormone with profound cardiovascular, bone, mood, and cognitive effects. Phase-appropriate ranges for pre- and post-menopausal status.
Testosterone
Scored against female reference ranges — not the male range. Important for metabolic health and body composition across the lifespan.
Bonus Marker
DHEA-S
An adrenal androgen that declines steadily with age — one of the most consistent indicators of biological aging rate. Ranges are sex- and age-specific.
The 4 Pillars
What the score actually measures.
Adherence
30%Behavioral compliance is the rate-limiting step for almost everyone. Measures logged doses against expected doses over a rolling 7-day window, per protocol. The 7-day window creates tight feedback — you see your behavior now, not averaged over a month.
Biomarker
25%Objective data is how you know if anything is working. The Vivy 11 covers metabolic health, cardiovascular risk, hormonal function, and body composition. Labs and daily physiology are complementary lenses — one tells you your status, the other your trajectory.
Health
25%Sleep, resting heart rate, steps, and VO2max — four of the most consistently replicated predictors of all-cause mortality. They update daily from your wearable and respond to your protocols. If your interventions are working, these metrics should be moving.
Kokkinos et al. (NEJM, 2022)
Consistency
20%Adherence asks: are you following your protocol? Consistency asks: are you showing up? Intermittent high adherence is not the same as consistent engagement. Scored as days with at least one log divided by seven — forgiving of single misses without rewarding erratic engagement.
Personalization
Your score adapts to you.
Biological sex
Determines which hormonal markers you're scored on and applies sex-specific reference ranges to body fat %, lean mass, and DHEA-S.
Age
Calibrates ranges on markers that change across the lifespan. Four brackets (18–29, 30–44, 45–59, 60+) based on Endocrine Society guidelines.
Mobility profile
If you use a wheelchair or have a mobility limitation, step count is excluded and remaining Health metrics are scored equally. No structural penalties for inaccessible goals.
Data availability
Missing labs? The Biomarker pillar weight redistributes instead of penalizing you. Your score always reflects your best current picture — not what's missing.
Excluded metrics
What's not in the score — and why.
HRV
Genuinely useful, but highly device-dependent. The same individual on Apple Watch, Garmin, and Oura can produce readings that differ by 20–30%. Scoring it would introduce systematic bias based on hardware.
Sleep quality / stages
Sleep quality scores vary significantly between wearables with no consensus measurement standard. Duration has the strongest evidence base and most reliable cross-device agreement.
Supplement brand or source
Vivy is protocol-agnostic. We track whether you're taking your protocol as prescribed — not what you're taking or where you get it. No conflicts of interest.
Data Freshness
Your score reflects the age of its inputs.
Adherence & Consistency
Update in real time — every log you create immediately changes your score.
Biomarkers
Blood labs count at full value for 30 days, then gradually decay to zero at 180 days. DEXA scans count at full value for 90 days before the same reduction.
Health metrics
Scored on the last 7 days of Apple Health data. If a metric hasn't synced recently, Vivy recognizes the gap and adjusts accordingly.
Research Notes
Grounded in evidence.
ApoB
The European Atherosclerosis Society Consensus Statement (2019) recommends ApoB as the primary lipid marker for cardiovascular risk assessment, noting superior predictive accuracy compared to LDL-C, particularly for atherogenic dyslipidemia phenotypes.
Fasting insulin
Kraft DA (2011) and subsequent analyses demonstrated that insulin dysregulation precedes glucose dysregulation by years, establishing fasting insulin as a more sensitive early metabolic marker.
VO2max & mortality
Kokkinos et al. (NEJM, 2022) demonstrated that cardiorespiratory fitness is among the strongest predictors of all-cause mortality, with risk reduction effects exceeding most other modifiable lifestyle factors.
Lean mass & longevity
Srikanthan & Karlamangla (2014) showed that muscle mass relative to body weight is inversely and independently associated with all-cause and cardiovascular mortality.
Visceral fat
Neeland et al. (2019) established visceral adipose tissue as an independent cardiovascular risk factor above and beyond BMI or total body fat percentage.
Vitamin D
Autier et al. and subsequent meta-analyses support an association between vitamin D sufficiency and reduced risk of cardiovascular disease, cancer mortality, and immune dysfunction.
hsCRP
Ridker et al. (NEJM, 2002; JUPITER trial) established hsCRP as an independent predictor of cardiovascular events, supporting its use as a primary inflammation marker.
See your score in action.
Vivy does not provide medical advice. The Longevity Score is an informational tool. Consult your physician before making changes to your health protocols.