Multilevel factors shaping sleep and circadian disruption in African-Americans and its impact on heart and metabolism
Official title: Multilevel Determinants of Circadian Factors and Sleep Disruption: Implications for Cardiometabolic Health Among African-Americans
Funded at Emory University · NIH-11397747 · Data updated 2026-11-12
This research looks at how everyday environments like home lighting, noise, and air pollution affect sleep and circadian rhythms in African-American adults and how these patterns relate to heart and metabolic health.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Emory University NIH-funded |
| Lab location | 1 site (Atlanta, United States) |
| Project start | September 1, 2022 |
| Project end | July 31, 2027 |
| Funding year | 2026 |
| Award (this year) | $733,666 |
| NIH project number | 5R01HL157954-05 |
| Project ID | NIH-11397747 on NIH RePORTER |
Who could benefit from this research
✓Could help
African-American adults (21+ years) living in or near Atlanta who are willing to have their home and neighborhood environment assessed.
✕Less likely to help
Individuals outside the study area or those without sleep-related issues may see limited direct benefit.
What this research studies
Researchers will study how household and neighborhood factors influence circadian misalignment and sleep disruptions in African-American adults using real-time measures and a well-characterized Atlanta cohort. They will examine how variables such as light at night, noise, air quality, and temperature relate to sleep quality, timing, and physiological markers. The study combines neighborhood data with individual sleep assessments to understand pathways linking sleep with blood pressure and metabolism. Findings could point to community and home-level interventions to improve sleep and reduce cardiometabolic risk.
Why it matters
Potential benefit: If successful, the work could identify actionable environmental targets to improve sleep and cardiometabolic health in African-Americans.
How similar studies have gone: Prior research links sleep disruption to cardiometabolic risk, with stronger signals emerging when considering environmental factors and specific populations.
Where this research is happening
-
Emory University
Atlanta, United States Active
Researchers
- Principal investigator: Johnson, Dayna — Emory University
- Study coordinator: Johnson, Dayna
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.