Consequences of ethnic differences in cardiometabolic disease in older age: the Southall And Brent Revisited (SABRE) tri-ethnic population cohort

By the age of 80, half of UK South Asians and African Caribbeans have diabetes, compared to one in five white Europeans. This long-running study, the Southall And Brent Revisited (SABRE) cohort, has tracked first-generation migrants and a European comparison group since 1988–91, when participants were middle-aged. Now in their late sixties and older, these participants offer a rare chance to unpick why diabetes hits some ethnic groups harder than others. The problem is that diabetes does more than raise blood sugar—it also increases the risk of heart failure, exercise intolerance, and cognitive decline. Ethnic minorities appear more vulnerable to these complications, but the reasons are poorly understood. SABRE’s detailed measurements of diabetes type and severity, collected across three decades, allow researchers to compare how the disease progresses differently in each group. If this work succeeds, it could reshape how doctors predict and prevent heart and brain decline in older adults from diverse backgrounds. The findings might lead to earlier, more targeted screening or treatments tailored to specific ethnic risk profiles. This is applied epidemiology with a clear public health goal: reducing the unequal burden of cardiovascular and cognitive disease in an ageing, multi-ethnic population.