Threshold
Where Occupant Health Translates into Buildable Design
Structured, sourced entries connecting occupant health to design decisions. Written for practitioners who already lead with health.
Featured Conditions
Clinical mapping for residential interventionLatest Health Drivers
Environmental determinants of healthRF Radiation
Radiofrequency radiation encompasses electromagnetic fields in the 3 kHz to 300 GHz range, produced by wireless communication devices (phones, Wi-Fi routers, Bluetooth), cell tower...
View driverBiofilms are complex microbial matrices, bacteria, fungi, and protozoa embedded in an extracellular polysaccharide gel, that form...
View driverGlare is excessive luminance contrast in the visual field, produced by bright light sources or reflections within or adjacent to t...
View driverExtremely low frequency (ELF) magnetic fields are produced by current flowing through wiring, appliances, and transformers.
View driverMethodology
Every Threshold entry is cross-referenced against condition evidence, environmental mechanisms, and the Wholesome Houses evidence-tier system. The goal is practical design judgment without flattening medical complexity.
Consensus clinical evidence and peer-reviewed synthesis.
Strong clinical correlation and longitudinal observation.
Emerging research, mechanistic evidence, and practitioner observations.
Stay Current with Threshold.
New entries, methodology notes, and pilot content will continue to evolve as the evidence base grows.