This blog is intended to go along with Population: An Introduction to Concepts and Issues, by John R. Weeks, published by Cengage Learning. The latest edition is the 13th (it will be out in January 2020), but this blog is meant to complement any edition of the book by showing the way in which demographic issues are regularly in the news.

You can download an iPhone app for the 13th edition from the App Store (search for Weeks Population).

If you are a user of my textbook and would like to suggest a blog post idea, please email me at:

Friday, June 22, 2012

Two Centuries of Disease and Death in America

The latest issue of the New England Journal of Medicine turns out to be its 200th anniversary volume. Our understanding of diseases and how to deal with them has evolved enormously over those 200 years. Indeed, the life of the New England Journal of Medicine spans quite literally the entire history of modern public health and medicine. In honor of this event, the Journal has published an essay by researchers at Harvard University detailing the changes between 1900 and 2010 in the things that kill us. These are not new to you if you have read Chapter 5 of my text, but it is always useful to be reminded of this history, and to remember how genuinely recent and thus potentially fragile our high life expectancy is.
By examining the many new diseases that have appeared over the past two centuries, historians have categorized the ways in which diseases emerge. New causes (e.g., severe acute respiratory syndrome, motor vehicle accidents, radiation poisoning), new behaviors (cigarette smoking, intravenous drug use), and even the consequences of new therapies (insulin transforming the course and manifestations of diabetes) can produce new diseases. Changing environmental and social conditions can increase the prevalence of once-obscure ailments (myocardial infarction, lung cancer, kuru, and “mad cow” disease). New diagnostic technologies and therapeutic capacity can unmask previously unrecognized conditions (hypertension). New diagnostic criteria can expand a disease's boundaries (hypercholesterolemia, depression). Changing social mores can redefine what is or is not a disease (homosexuality, alcoholism, masturbation). New diseases can emerge as the result of conscious advocacy by interested parties (chronic fatigue syndrome, sick building syndrome). HIV–AIDS alone demonstrates many of these modes of emergence. The emergence, recognition, and impact of disease are never just a bioscientific process; the advent of a new disease always involves social, economic, and political processes that shape its epidemiology and influence our understanding and response.
Even as prevailing diseases have changed, health disparities have endured. Inequalities in health status have always existed, regardless of how health has been measured or populations defined. When Europeans arrived in the Americas, they witnessed stark disparities in the fates of European, American, and African populations. During the ravages of 19th-century industrialization, physicians grew familiar with health disparities between rich and poor. Health inequalities remain ubiquitous, not just among races and ethnic groups but also according to geography, sex, educational level, occupation, income, and other gradients of wealth and power.
And there's lots more in this essay, which is accompanied by a very nice interactive graph showing the change over time in the major causes of death in the US. That graph alone is worth the trip to this online article. 

If you'd like to experience a century of change in medical practice through literature (beyond the New England Journal of Medicine, that is), I encourage you to read The Bone Garden, by Tess Garritsen, who is a physician turned novelist.

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