Longevity Playground

Three real science engines you can poke at. Click a whale, drag your lifestyle, watch cells age. Every number is computed live from real data (AnAge) and real methods (Felsenstein 1985, Saitou & Nei 1987, Gompertz–Makeham). Nothing here is fabricated — where a figure is an estimate, it says so.

🌳 Tree of Longevity

Why does a bat outlive a horse-sized rodent? Plot maximum lifespan against body size for 29 real species, then correct for the fact that species share ancestors.

Lifespan vs. body size · log–log

The gold line is a least-squares fit through the mammals only (Kleiber-style allometry). Non-mammals are plotted for reference. Click any point.

Click a species

…to open its dossier

Each animal gets a Longevity Quotient — how many times longer it lives than a mammal of its body size “should.” LQ = 1 is exactly on the line.

Mammal fit slope

—

R²

—

Phylogeny · 12 mammals

⏳ Aging Simulator

Adult mortality climbs roughly exponentially with age — the Gompertz–Makeham law. Move seven lifestyle dials and watch your survival curve and biological-age clock respond.

Lifestyle dials

Biological age @ 50

—

Median lifespan

—

Hazard multiplier

—

90th %ile age

—

Survival curve · S(t)

You Average adult

Mortality parameters · μ(t) = A + B·eᶿᵗ

Direct control of the level (A, B) and the rate-of-ageing (θ). The mortality-rate doubling time is ln2/θ.

Hazard μ(t) · log scale

Monte-Carlo · age at death (10,000 lives)

Press “Run 10,000 lives” — inverse-transform sampling from your survival curve.

Tornado · which dial moves lifespan most?

One-at-a-time: each lifestyle dial swung min→max, all others held at average. OAT ignores interactions between factors.

🧫 Cell Lab

A living tissue. Cells divide until they hit the Hayflick limit, then senesce and leak SASP signals that age their neighbours. Flip interventions and watch tissue function rebound.

Tissue · passage 0

Healthy Senescent (SASP) Stressed Empty

Tissue function

—

Senescent

—

Healthy

—

Avg divisions

—

Interventions

Function over time

Agent-based model rules

Senolytic dose–response sweep

11 doses × headless runs

Sweep senolytic dose 0→100% and measure final tissue function.

Each dose runs the full model headlessly from the same seed, then plots the settled tissue-function level. Look for the therapeutic window.

Teaching models, not medical advice. These simulators are simplified for intuition and education. The Aging Simulator's lifestyle effect-sizes are illustrative hazard multipliers (directionally consistent with epidemiology, not fitted to you); the Cell Lab is a stylised agent-based cartoon of senescence, not a validated biological model. Real longevity is individual and multifactorial. Nothing here diagnoses, treats, or predicts your health — talk to a clinician for that.

Data & methods — everything is real

Species body mass & maximum longevity from the AnAge database. Body mass is unavailable in AnAge for the giant tortoise, Greenland shark and ocean quahog — those masses are literature estimates and are flagged “~est” in the app.