Type 2 diabetes has become a major public health problem in South Asia in recent decades. The region is now home to an estimated 84 million people suffering from diabetes—approximately one-fifth of the world’s 451 million adults with diabetes—a number that is expected to rise by 78% by 2045. Even more concerning, across South Asia the disease burden increasingly occurs in the most productive midlife period. Among Indians, for example, diabetes is estimated to occur on average 10 years earlier than their western counterparts, and almost half of Indian patients with type 2 diabetes are diagnosed before age 40.

How do South Asian health system influence diabetes care? What is the magnitude of the economic impact of diabetes in South Asia? And what can be done to mitigate that economic burden? These are some of the questions that a team of researchers, including Karen Eggleston, APARC’s deputy director and director of the Asia Health Policy Program, set out to answer in a new study published in the journal Current Diabetes Reports.

Eggleston co-authored the study with Kavita Singh of the Public Health Foundation of India and the Centre for Chronic Disease Control in New Delhi, and with M. Venkat Narayan, Professor of Medicine and Epidemiology and Director of the Global Diabetes Research Center at Emory University. They find that diabetes-related complications lead to enormous treatment costs, causing catastrophic medical spending and illness-induced poverty for many households.

The new study is related to a broader research project led by Eggleston, entitled Net Value in Diabetes Management, that compares health care use, medical spending, and clinical outcomes for patients with diabetes as a lens for understanding the economics of caring for patients with complicated chronic diseases across diverse health systems. This international collaborative research convenes teams of clinicians and health economists in ten countries (and growing) across Asia, as well as the United States and The Netherlands. Together, they analyze big data—detailed, longitudinal patient-level information for large samples from each country, including millions of records of clinical encounters, health-check-up, and medical spending—to compare the health care use and patient outcomes for adults with type 2 diabetes in their health systems.

In the new publication, Eggleston and her co-authors first introduce several unique features that characterize the type 2 diabetes epidemic in South Asia. These include a high risk of developing diabetes even at lower levels of body mass index than observed among western populations; a high prevalence of glucose intolerance, low levels of HDL cholesterol, and high levels of triglycerides; a relationship between impaired fetal nutrition, diabetes, and cardiovascular risk; and the likelihood of rapid urbanization impacting the diabetes burden of the wealthy and the underprivileged differently.

Furthermore, South Asian countries face difficult challenges in delivering diabetes care. The health sector in the region has little organized financing, leading to heavy out-of-pocket spending by patients. Limited availability and affordability of anti-diabetic drugs is a major driver of lower use of such medicines. These factors, combined with a general lack of health care professionals and infrastructural resources and low quality of healthcare governance, all contribute to poor health outcomes.

Eggleston and her co-authors assess the current literature on the economic impact of diabetes in South Asia. They show that, compared with the high prevalence of diabetes in South Asian countries, the total health spending as a percentage of GDP in the region has remained low and fairly constant (3-4% in most countries) over the last two decades, with less than 1% of GDP spent on healthcare by the government, and a miniscule 0.2% by pre-paid private insurance, resulting in a large proportion of out-of-pocket healthcare spending. The financial burden of diabetes and its complications can therefore have catastrophic implications for households that are often driven to sacrifice disastrous proportions of their income to cover treatment costs.

Diabetes causes premature mortality, high morbidity, and disability. To mitigate the economic and social welfare burden of the disease, the researchers conclude, policymakers in South Asia must take urgent action “to increase investment in evaluating cost-effective strategies to manage diabetes and preventative approaches.” The team offers a set of policy recommendations, including monitoring the economic burden of diabetes and the quality of care; focusing on the screening and prevention of diabetes and its risk factors; strengthening government health facilities and primary care services; expanding access to affordable, essential medicines, and more.