- Source type
- Study
- Access type
- Publisher
- Publisher
- Scientific Reports
- Date
- 2018-09-21
- Added
- 2026-06-21
Trust profile
VV Source Trust Matrix v1.0
VV Source Trust Matrix v1.0 asks whether this source is trustworthy for the claim lane being used, not whether every possible claim from it is equally strong.
88
Peer-reviewed research publisher
- Publisher type
- Peer-reviewed journal
- Bias profile
- Moderate
This source is strongest for clinical outcomes and mechanism and weaker for regulatory status and trial discovery.
VV Source Fit Score 1.0
Fit by use case
Fit scores are role-specific. A source can be excellent for one claim lane and weak for another.
- Regulatory status
- 65/100
- Context Source
- Clinical outcomes
- 92/100
- Primary Anchor
- Mechanism
- 90/100
- Primary Anchor
- Safety
- 86/100
- Strong Support
- Consumer context
- 72/100
- Context Source
- Trial discovery
- 65/100
- Context Source
Best used for
- Primary studies
- Systematic reviews
- Mechanistic research
Weak for
- Regulatory status
- Universal consumer recommendations
Used in Viral Vitalism
Sleep Is More Than Hours—and Less Certain Than the Headlines
Roles: Primary source
Show section-level references
Validation of the Sleep Regularity Index in Older Adults and Associations with Cardiometabolic Risk
Roles: Primary source
Show section-level references
Claim ledger
Claims supported
Reviewed claim cards that cite this source in the evidence graph.
sleep: Sleep duration, sleep quality, and sleep regularity are distinct
Sleep duration, sleep quality, and sleep regularity are distinct dimensions of sleep health, and consumer claims should avoid treating hours slept as the whole sleep signal.
sleep: Objective sleep regularity is associated with all-cause and cause-specific
Objective sleep regularity is associated with all-cause and cause-specific mortality risk, and may capture a health-relevant sleep dimension that average duration alone misses.
Related studies
Related sources
About Sleep
U.S. public-health context on sleep duration, quality, disorders, and adult sleep guidance.
- Trust score
- 91
- Publisher
- Centers for Disease Control and Prevention
- Access
- Official
- Usage
- 6 connections
Dietary Guidelines for Americans, 2025–2030
Use for current U.S. dietary-guidance context and contrast with zero-plant eating patterns.
- Trust score
- 91
- Publisher
- U.S. Department of Health and Human Services / U.S. Department of Agriculture
- Access
- Official
- Usage
- 3 connections
FDA: First Over-the-Counter Continuous Glucose Monitor for Children
Canonicalized from rapid brief fda-otc-cgm-children-dexcom-stelo.
- Trust score
- 94
- Publisher
- U.S. Food and Drug Administration
- Access
- Official
- Usage
- 1 connection
NIH health information
National Institutes of Health used across the Viral Vitalism evidence library.
- Trust score
- 91
- Publisher
- National Institutes of Health
- Access
- Official
- Usage
- 0 connections
Beyond Type 1: FDA approves Tzield for pediatric stage 3 T1D
Canonicalized from June 30, 2026 rapid-brief batch.
- Trust score
- 91
- Publisher
- Beyond Type 1
- Access
- Publisher
- Usage
- 1 connection
CDC: Steps for Losing Weight
Centers for Disease Control and Prevention used across the Viral Vitalism evidence library.
- Trust score
- 91
- Publisher
- Centers for Disease Control and Prevention
- Access
- Official
- Usage
- 7 connections