SCIENCE & METHODOLOGY
A measurement system built for
the long arc of health.
My Marathon Life uses objective checkpoints, longitudinal trends, daily behavior, connected context, and clearly labeled educational estimates. The purpose is not to replace clinical judgment—it is to help people understand more, ask better questions, and follow change over time.
THE METHOD
Measure. Understand. Act. Measure again.
A single test can be useful, but a longitudinal system is designed to show what happened between checkpoints and what context surrounded the change.
Objective checkpoints
Supported lab results create dated evidence that can be compared across time rather than interpreted in isolation.
Longitudinal trends
Direction, stability, magnitude, and available data coverage provide context beyond a single high or low value.
Biological and Organ Age
Educational age estimates organize supported data into whole-body and system-level context, with sparse-data protections and stability guardrails.
Speed of Aging
Repeat checkpoints allow comparison between the passage of calendar time and change in the biomarker-based biological trajectory.
Mitochondrial lens
Mitochondria convert nutrients and oxygen into usable cellular energy. The product uses mitochondrial efficiency as a unifying longevity philosophy across measurement and daily behavior.
Educational boundaries
Scores, programs, AI responses, and coaching are educational tools. They do not diagnose, prescribe, provide emergency monitoring, or replace licensed care.
DATA COVERAGE MATTERS
Every insight should be read with its evidence.
The meaning of an estimate depends on the tests, dates, source quality, connected permissions, and history available at the time.
- 01
Identify the source
Know whether the information came from a lab report, connected device, provider record, user entry, or AI conversation.
- 02
Respect the date
Health information changes. A result belongs to a specific checkpoint and should not be treated as permanently current.
- 03
Review coverage
Sparse data and missing tests can limit the completeness of whole-body or organ-level interpretations.
- 04
Open the underlying result
Use scores and summaries as navigation into the actual biomarkers, trends, and source records.
- 05
Bring questions to a professional
A licensed healthcare professional can interpret the information in light of medical history, examination, medications, and clinical context.
LIVE YOUR BEST LIFE
Explore the system behind the insights.
See how the Compass, results, programs, connected health, Marathon AI, and Sunny fit together.