Definition
Neighborhood safety — perceived and objective — shapes chronic stress, physical activity, sleep, and mental health.
Why it matters
Chronic hypervigilance from unsafe neighborhoods is a documented environmental exposure.
The Science
Living in unsafe neighborhoods is associated with elevated cortisol, worse sleep, reduced physical activity, and increased mental-health burden. Community-level interventions can shift these outcomes.
The NSI Perspective
NSI treats neighborhood safety as biology, not politics alone.
Clinical Implications
Individual care that ignores neighborhood context misses substantial biological load.
Practical Application
If you live somewhere unsafe, your nervous system is reading that. Small changes to safety (locks, lighting, community) matter.
References
- 1.Meijer M, Røhl J, Bloomfield K, Grittner U. Do neighborhoods affect individual mortality? A systematic review. Soc Sci Med. 2012;74(8):1204–1212.