The Broader Implications of the “Epidemiologic Transition”
Friday, June 20th, 2008Joshua Schulman-Marcus reports on the anthropological and psychological impact of chronic diseases in developing countries.
A Personal Reflection
Over the past year, I have written several articles for the Lancet Student on the growing prevalence of chronic noncommunicable diseases (CNDs) in developing countries. Major studies have indicated that diseases and risk factors such as hypertension, diabetes, tobacco use, and asthma are increasing in low- and middle-income countries in all regions of the world (1,2). Recognizing these trends, the World Health Organization (WHO) has recently begun to address this new global health priority (3,4). Researchers and advocates have pointed out that more investment in prevention, screening, and treatment will be needed to avert the resulting unnecessary disability and mortality (5,6). These reports indicate that CNDs will be a major item on the global health agenda for the duration of our careers.
Most of the research, including the recent series published by The Lancet (7), has been predicated on epidemiology, economic impact, health systems, and potential interventions. Less has been said about the non-technical implications of a transition to chronic disease in the developing world. This is unfortunate as “health” extends far beyond the biomedical realm; it is intertwined with sociological structures and culture. A shift from acute infections and traumas to chronic, often asymptomatic ailments, thus presents a paradigm shift in the notion of what it means to be a healthy person. This is a serious adjustment that deserves careful consideration. For how can we expect people to take medicines or alter lifestyles if they don’t believe that they are ill?
I personally saw the anthropological and cultural challenges of the epidemiologic transition when I worked with the Ethiopian Israeli community in 2005. Arriving in urban Israel from rural Ethiopia in the 1980s, the immigrants had a conception of health that largely revolved around the acute infections and malnutrition endemic to poor countries. Within ten years, though, the prevalence of Type 2 diabetes rose from 0.5% to 17% in some cities. Similarly, asthma, blood cholesterol levels, blood pressure, and red meat consumption soared.
The Ethiopian immigrants had no word in their common language for diabetes. I spoke with a man with longstanding diabetes who had never heard of the pancreas. He didn’t believe he was sick. As the deleterious elevation of blood glucose is often asymptomatic early in the disease course, it was exceedingly difficult to convince patients to adhere to therapy. Even worse, the language used to explain diabetes can be very confusing, as the notion of “high sugar” led some patients to believe that sugary foods were the cause of the condition. Miscommunication between the Israeli primary care providers and the Ethiopian patients, compounded by poverty and power disparities, led to distrust and very poor quality of care. And this was in a country with a well-financed health system designed to address chronic noncommunicable diseases.
Indeed, the entire notion of chronic disease resulted in confusion and frustration for some Ethiopian immigrants. “Why can’t the doctor cure me? Why doesn’t he give me a shot?” asked one. “He must just be a bad doctor, or maybe he doesn’t treat me because I am Ethiopian.” I heard similar confusion about the concept of lifelong drug therapy. One mother, for example, refused to give her son an asthma inhaler, lest he become “addicted” to it like tobacco. Another, however, wanted constant steroids to treat his mild asthma, because “they make me feel good.”
My discussions with the Ethiopian immigrants and Israeli health workers also hinted at the complexity of advocating lifestyle changes to prevent chronic disease. Lifestyle is the product of thousands of choices, many of which are heavily influenced by economics, sociocultural norms, and status. People in developing countries may aspire to eat Western foods high in saturated fats and may choose to smoke American cigarettes to indicate their wealth. Being overweight or obese, even having some diabetes, may be lauded as a sign of success. These attitudes can be deeply ingrained, and modifying them will require interventions informed by a nuanced understanding of local culture and health beliefs. If chronic diseases are not presented in terms that make them believable, most people will be hesitant to significantly alter their lifestyles in order to “prevent” an abstraction.
Over the past few years, attention has been increasingly paid to the coming epidemic of chronic noncommunicable diseases in the developing world. These diseases can lead to devastating consequences, both physically and economically. It has thus been recognized that many disciplines will need to be rallied in order to adapt health systems for chronic care, re-train workers, ensure access to medicines, and design cities amenable to physical activity (2-7). Yet the barriers to the effective prevention and care of these diseases cannot be lowered through the technical expertise of biomedicine or policy alone. Rather, my experiences have taught me that it will require a more holistic understanding of how individuals adapt to a revolution in the conception of health, illness, and healing. To do so, I think we first will need to learn how to be better and more patient listeners.
Joshua Schulman-Marcus
4th year medical student
Mount Sinai School of Medicine
New York, USA
jschumar@gmail.com
(1) Lopez AD, Mathers CD, Ezzati M et al. Global and regional burden of risk factors, 2001: systematic analysis of population health data. Lancet 2006; 367:1747-57
(2) Jamison D, Breman J, Measham A, Alleyne G, Claeson M, Evans DB et al. Disease control priorities in developing countries. 2nd ed. New York: Oxford University Press and the World Bank, 2006.
(3) Innovative care for chronic conditions: building blocks for action. Geneva: WHO, 2002
(4) Preventing chronic diseases: a vital investment. Geneva: WHO, 2005
(5) Leeder S, Raymond S, Greenberg H, Liu H, and Esson K. A Race against Time: The Challenge of Cardiovascular Disease in Developing Countries. New York: Trustees of Columbia University, 2004.
(6) Yach D, Hawkes C, Gould CL, Hofman K. The global burden of chronic diseases: overcoming impediments to prevention and control. JAMA 2004; 291:2616-2622.
(7) Horton R. Chronic disease: the case for urgent global action. Lancet 2007; 370:1881-82.


