Research presented at the European Association for the Study of Diabetes meeting in Milan indicates that moving from a high-poverty area to a less deprived neighbourhood can lower the chance of developing type 2 diabetes.
Study Design and Population
Researchers examined data from 1,932,869 adults in Ontario, Canada, who were free of diabetes at the start of the observation period. The average participant was 42.1 years old and about 51% were women, reflecting a broadly representative adult cohort.
All participants lived in neighbourhoods where at least 30% of households fell below Statistics Canada’s after-tax Low-Income Cut-Off. They were followed for up to 21 years to track new diabetes cases, allowing the investigators to observe long-term health outcomes associated with residential change.
The team compared three groups: those who relocated to a lower-poverty area, those who moved to another high-poverty area, and those who remained in the same disadvantaged community. To balance differences such as age, sex, immigration background, walkability and city size, the analysis used inverse probability weighting, a statistical technique that gives each person a weight based on the likelihood of their exposure, thereby creating comparable groups.
Risk Reduction Findings
People who moved to a less deprived neighbourhood experienced a 24% lower incidence of type 2 diabetes compared with those who moved to another high-poverty area. This reduction suggests that environmental improvement can have a measurable impact on metabolic health.
When compared with residents who did not move at all, the risk was 57% lower for those who changed to a lower-poverty location. The contrast between movers and non-movers highlights the potential benefit of changing one’s residential context.
“People who move may differ from people who do not move in ways that are difficult to fully measure, so this finding should be interpreted cautiously and requires further investigation,” said Dr Sharmin Majumder of the University of Toronto.
Implications for Urban Planning
Dr Majumder noted that lower-poverty neighbourhoods often have more affordable healthy food options, better walkability, green spaces, and greater access to health services. They may also feature reduced traffic-related air pollution, lower noise levels and stronger opportunities for social interaction, all of which can influence lifestyle choices linked to diabetes risk.
Identifying which of these factors most directly lowers diabetes risk is the next research priority. Future studies will aim to isolate the individual contribution of food environment, physical-activity infrastructure and air quality.
Understanding the specific neighbourhood characteristics that protect against diabetes could guide future urban revitalisation projects, such as improving housing quality, expanding walkable streets and ensuring equitable access to community resources. Planners and policymakers may use these insights to design interventions that reduce health disparities linked to socioeconomic status.
