Living evidence page · Everyday foundations
Sleep
Duration, regularity and fragmentation carry health signals, but the featured studies do not show that changing one metric extends lifespan.
Safety and regulatory context: Sleep duration, regularity and fragmentation are separate measurements. Observational associations do not show that changing sleep extends life.
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Three different evidence questions
Counts and order describe what More Years has released. They do not indicate evidence strength, efficacy, safety, importance, popularity or recommendation.
Released reporting
What the covered evidence says
Observational study · Human outcomes · mostly observational evidence
Sleep patterns are linked to healthy aging—but most evidence is observational
- Population
- Adults and community-dwelling older adults in observational sleep cohorts
- Measured
- mortality and frailty associations
Duration, regularity and fragmentation carry health signals, but the featured studies do not show that changing one metric extends lifespan.
Does not establish: The measured result does not establish a general longevity benefit beyond the population, design and outcomes reported.
Published 2026-07-31 · verified 2026-07-31
Primary publications and governing syntheses
2 covered studies
These records preserve identifiers, populations, outcomes and interpretation boundaries from the released evidence library.
Evidence synthesis · peer-reviewed
Gallicchio Kalesan Sleep Mortality 2009
DOI: 10.1111/j.1365-2869.2008.00732.x
- Population
- 23 adult observational studies using self-reported duration
- Measured
- all-cause mortality; cardiovascular mortality; cancer mortality
- Result in released coverage
- In adult observational evidence, short or long self-reported duration and irregular-insufficient objective sleep patterns are associated with higher all-cause mortality than reference patterns. · The reviewed human evidence does not establish that changing sleep duration or regularity extends healthy-human lifespan.
- Evidence maturity
- mainly human observational evidence
- Funding / conflicts
- paper disclosures to be shown
- Limitations
- observational evidence · self-reported sleep · heterogeneous duration categories · reverse causation · association is not causation · residual confounding · measurement differences · absence of a lifespan intervention trial is not proof no intervention could help
The measured result does not establish a general longevity benefit beyond the population, design and outcomes reported.
Verified 2026-07-31 · correction state: none
Observational study · peer-reviewed
Mesa Sleep Regularity Mortality
DOI: 10.1111/jsr.14048
- Population
- 1,759 diverse US adults with seven-day actigraphy
- Measured
- all-cause mortality association
- Result in released coverage
- In adult observational evidence, short or long self-reported duration and irregular-insufficient objective sleep patterns are associated with higher all-cause mortality than reference patterns. · The reviewed human evidence does not establish that changing sleep duration or regularity extends healthy-human lifespan.
- Evidence maturity
- mainly human observational evidence
- Funding / conflicts
- paper disclosures checked; authors declared no conflicts
- Limitations
- cluster combines regularity and duration · residual confounding · reverse causation · one baseline sleep window · association is not causation · measurement differences · absence of a lifespan intervention trial is not proof no intervention could help
The measured result does not establish a general longevity benefit beyond the population, design and outcomes reported.
Verified 2026-07-31 · correction state: none
Registry records
0 connected clinical trials
Status and results availability are kept separate from evidence conclusions.
No covered trial record in released reporting. This does not mean no trial exists.
Coverage timeline
When this reporting was released
- Sleep patterns are linked to healthy aging—but most evidence is observationalHuman outcomes · mostly observational evidence