The global rise in mental health-related disorders represents a significant health and wellbeing challenge, imposing a substantial social and economic burden on individuals, communities, and healthcare systems. According to the World Health Organization, one in four people globally will be affected by mental or neurological disorders at some point in their lives, highlighting a significant global health concern that warrants carefully considered and innovative responses. While mental health challenges arise from complex, multifaceted factors, emerging research indicates that the built environment—the architecture of our homes, workplaces, and public spaces—may exert a critical but underappreciated influence on mental health outcomes. This paper outlines a novel theoretical framework for how visual stressors in the built environment might trigger neurophysiological stress responses via the HPA and SAM axes, potentially contributing over time to allostatic load. In this paper, it is proposed that chronic physiological strain can alter neuroplastic processes and neurogenesis in key brain regions—such as the hippocampus, prefrontal cortex (PFC), anterior cingulate cortex (ACC), and amygdala—thereby affecting cognitive health, emotional regulation, and overall mental wellbeing. Drawing on the principle of neurosustainability, this paper suggests that long-term exposure to stress-inducing environments may create feedback loops, particularly involving the amygdala, that have downstream effects on other brain areas and may be linked to adverse mental health outcomes such as depression. By presenting this framework, this paper aims to inspire further inquiry and applied experimental research into the intersection of neurophysiology, mental health, and the built environment, with a particular emphasis on rigorous testing and validation of the proposed mechanisms, that may then be translated into practical architectural design strategies for supporting health and wellbeing. In doing so, it is hoped that this work may contribute to a more holistic approach to improving mental health that integrates the creation of nurturing, resilient spaces into the broader public health agenda.

The concept of architecturally mediated allostatic overload has established that chronic exposure to stress-inducing built environments can elicit stress responses within the body, overwhelming regulatory systems and contributing to adverse health outcomes through sustained activation of stress response pathways. Recent advances in epigenetics, combined with emerging evidence of environmental stress-induced epigenetic modifications, suggest that the health impacts of chronic built environment stress may extend far beyond previously understood physiological consequences. This paper introduces the theoretical concept of “built environment-modulated epigenetics” (BEME), extending the framework of architecturally mediated allostatic overload to consider how chronic exposure to stress-inducing built environments may create lasting epigenetic modifications with potential transgenerational implications. We propose that prolonged activation of the hypothalamic–pituitary–adrenal (HPA) and sympathetic-adreno-medullary (SAM) axes by built environment stressors may result in maladaptive DNA methylation and histone modifications affecting stress-responsive genes, similar to documented effects of environmental toxins, air pollution, and psychosocial stressors. Given robust evidence that environmental stressors can create transgenerational epigenetic effects, this theoretical framework suggests that stress-inducing built environments may impact not only current occupants, but future generations through heritable epigenetic modifications. This extension of architecturally mediated allostatic overload theory fundamentally challenges traditional approaches to architectural design and urban planning, positioning the built environment as a potential determinant of long-term epigenetic programming.

'Correction to: The Potential of Biophilic Design and Nature to Improve Health, Creativity and Well-Being' published in 'Environmental Neuroscience'