While virtual-reality path integration (VR-PI) may reveal subtle changes that precede the onset of clinical cognitive symptoms, the association between PI performance and structural brain changes remains unclear. Now, researchers have demonstrated that poor PI performance is linked to accelerated cortical thinning in several brain regions and is tied to key blood biomarkers of neurodegeneration. The findings suggest that VR navigation tasks may offer a non-invasive approach for early detection of neurodegenerative diseases.

Traumatic brain injury (TBI) affects millions worldwide, yet effective treatments remain limited. A new review outlines how stem cell-based therapies can promote brain repair by reducing inflammation, supporting neural regeneration, and restoring neural function. It also highlights emerging strategies such as exosome-based therapies and biomaterial scaffolds. While early clinical trials and preclinical findings are encouraging, translating these advances into reliable clinical treatments remains a critical next step.

Researchers have proposed a new conceptual framework called “Health Elements” that positions digital technologies and AI as core structural drivers of health alongside biological, behavioral, social, and environmental factors. Published in Health Data Science, the framework argues that health outcomes emerge from dynamic interactions across multiple domains rather than from isolated risk factors alone. The study reflects growing recognition that digital systems—including algorithms, wearable devices, AI-enabled diagnostics, and health data infrastructures—are increasingly shaping health behaviors, access to care, and population-level outcomes.

The authors also discuss how multimodal health data integration, complex systems science, and AI-based analytical methods could support more adaptive public health and clinical decision-making. At the same time, they warn that algorithmic bias, digital inequity, and governance challenges may reinforce existing health disparities if ethical safeguards are not built into future digital health systems. An accompanying editorial describes the framework as a significant extension of traditional Social Determinants of Health models for the digital era.