nature-based interventions have a small physiological positive effect
Exact: SMD = 0.24
Nature-based interventions have a modest and non-significant positive effect on physiological outcomes
In contrast to the large psychological benefits, physiological positive outcomes showed only a small and non-significant effect (SMD = 0.24; 95% CI: -0.19 to 0.67). The confidence interval crossing zero indicates uncertainty about whether nature-based interventions reliably improve physiological positive markers beyond control conditions.
while the SMD for physiological dimensions was 0.24 (95% CI, -0.19 to 0.67)
Related findings
physiological and psychological responses measured during urban walks
Psychophysiological responses of 29 subjects were analyzed in relation to urban street scene configuration and color
Chiara Maninetti et al., 2026, Frontiers in Psychology
more greenery linked to earlier free-day bedtimes in children
Higher neighbourhood vegetation (NDVI) is associated with earlier free-day bedtimes in children
Zeyu Wang et al., 2025, Environmental Research
more greenery linked to earlier weekday bedtimes in children
Higher neighbourhood vegetation (NDVI) is associated with earlier weekday bedtimes in children
Zeyu Wang et al., 2025, Environmental Research
Read more in
Healthcare 
Urban Singapore's green mandate, sixty years in
Mandatory greening raises developer costs before it differentiates assets, and the most cited showcase numbers come from the architects themselves.
Workplace Pricing biophilia: what the evidence is worth
Read at the primary sources, the business case for nature in buildings is narrower than advertised and strong enough to act on.
More from The Built Review
Healthcare Built to Wake: How Hospital Noise and Light Undermine Patient Sleep
Of the two environmental levers on inpatient sleep, noise control is the better proven and the cheaper, while tunable lighting for the general ward is the one the evidence does not yet support.
Workplace Germany's missing indoor-air bill
France, Britain and Australia have priced bad indoor air. Germany's missing number is a political choice, not a methodological limit.
Housing What insurers don't ask about buildings
Health insurers price age, tobacco and zip code. Building quality is in no model, and the law is only half the reason.