How can the metaverse improve public health?

What are the key opportunities and uncertainties in the metaverse that can help us better manage non-communicable diseases? This is the subject of a paper recently published in the Journal of Medical Internet Research, authored by Associate Professor Javad Koohsari from the School of Knowledge Science at Japan Advanced Institute of Science and Technology (JAIST), who is also an adjunct researcher at the Faculty of Sport Sciences at Waseda University, along with Professor Yukari Nagai from JAIST; Professor Tomoki Nakaya from Tohoku University; Professor Akitomo Yasunaga from Bunka Gakuen University; Associate Professor Gavin R. McCormack from University of Calgary; Associate Professor Daniel Fuller from University of Saskatchewan; and Professor Koichiro Oka from Waseda University. The team lists three ways in which the metaverse might potentially be used for large-scale health interventions targeting non-communicable diseases.

Non-communicable diseases like diabetes, heart disease, strokes, chronic respiratory disease, cancers, and mental illness are greatly influenced by the "built environment," i.e., the human-made surroundings we constantly interact with. Built environments can affect health directly through acute effects like pollution or indirectly, by influencing physical activity, sedentary behaviour, diet and sleep. Therefore, health interventions that modify built environments can be used to reduce the health burden of non-communicable diseases.

This is where the metaverse can be of assistance. Experiments conducted in virtual settings within the metaverse can be used to investigate the effectiveness of large-scale interventions before they are implemented, saving time and money. "Within a metaverse, study participants could be randomised to experience different built environment exposures such as high and low density, high and low walkability, or different levels of nature or urban environments,"explains Prof. Koohsari, the lead author of the paper, who is among the top 2% of most influential researchers worldwide across all scientific disciplines in 2021. He further adds, "This article will be of particular interest to experts in public health, urban design, epidemiology, medicine, and environmental sciences, especially those considering using the metaverse for research and intervention purposes."

Secondly, the article notes that the metaverse itself can be used to implement health interventions. For instance, the metaverse can give people exposure to natural "green" environments even when they have little or no access to these environments in the real world. In this way, the metaverse may reduce the negative mental health effects associated with crowded, stress-inducing environments.

Virtual living spaces and offices within the metaverse can be endlessly customised. Moreover, changes to environments within the metaverse can be implemented with the click of a button. Hence, thirdly, the metaverse may also offer a virtual space to test new office and built environment designs in real-time. Prof. Koohsari adds, "A metaverse could allow stakeholders to experience, build, and collaboratively modify the proposed changes to the built environment before these interventions are implemented in the physical world."

Although it lists several ways in which the metaverse can transform public health interventions by modifying built environments, the article notes key limitations of the metaverse in simulating the real world. In particular, the current state of the metaverse does now allow for the testing of many human behaviours or their interaction with built environments. In addition, the population of the metaverse may not be representative, as people from economically lower strata have limited access to virtual reality technology.

The article also explores ways in which the metaverse can negatively affect population health. For example, excessive immersion in virtual environments may lead to social isolation, anti-social behaviours, and negative health effects associated with physical inactivity or increased screen time. Finally, the article notes that excess reliance on artificial intelligence may lead to the replication of real-world biases and social inequalities in the virtual world. In conclusion, Prof. Koohsari remarks, "It is best, sooner rather than later, to face the prospects and challenges that the metaverse can offer to different scientific fields, and in our case, to public health."