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Examining the Impact of Stress

Article / Review by on November 18, 2013 – 11:15 pmNo Comments

Examining the Impact of Stress
Symposium explores transdisciplinary studies on stress and its role in health disparities

Exactly how much does stress really contribute to disparities in disease and premature mortality, and specifically, what is its role in cancer and cardiovascular disease?

To arrive at some answers, and encourage collaboration on transdisciplinary approaches to studying stress, Harvard Catalyst’s Health Disparities Research Program sponsored a two-day symposium in October.

Williams moderating a discussion at the Harvard Catalyst Health Disparities Research Program. Image: Anna SchachterWilliams moderating a discussion at the Harvard Catalyst Health Disparities Research Program. Image: Anna Schachter

Twenty-five national and international speakers, including a Nobel laureate, presented at the symposium, which was entitled “Stress and Health Disparities: Bridging Laboratory, Clinical, and Population Scientific Approaches.”

Psychosocial stress arising from low socioeconomic status and discrimination is a powerful mediator of disease and one that holds across gender, culture, and racial differences, said Michelle Williams, Stephen B. Kay Family Professor of Public Health and chair of the Department of Epidemiology at the Harvard School of Public Health (HSPH).

Williams, also director of the Harvard Catalyst Health Disparities Research Program, who opened the conference along with Julio Frenk, dean of Harvard School of Public Health and the T & G Angelopoulos Professor of Public Health and International Development, said researchers are still studying the ways in which stress contributes to health disparities.

Protecting Telomeres

Keynote speaker Elizabeth Blackburn, of the University of California, San Francisco, one of three Nobel Prize winners in Physiology or Medicine awarded in 2009 for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase (telomeres are the protective caps on the ends of chromosomes that are a measure of cell age) presented her research on the role of telomeres in stress.

Blackburn illustrated how chronic psychosocial stress can lead to shorter telomeres, causing cells to stop replicating and cell genomes to become unstable. Lower educational attainment and neighborhood deprivation are also associated with shorter telomeres, and maternal stress during pregnancy has been known to result in shorter newborn telomeres.

Ultimately, depleted telomere maintenance can diminish human health, increase disease susceptibility and it is exacerbated by severe chronic stress.

“Telomere attrition is a stress-related and valuable, powerful biomarker, and at least a partial contributor to aging-related diseases,” Blackburn said.
A series of panels featured experts in related fields from Harvard Medical School, HSPH, Massachusetts General Hospital, Brigham & Women’s Hospital, Boston Children’s Hospital, David Geffen School of Medicine at UCLA, Technische Universität (Dresden), Columbia University, University of Iceland, University of Iowa, Stanford University School of Medicine and Johns Hopkins Hospital.

A panel on stress and health disparities, examined work-related stress, identifying the role social environment plays in dealing with stress. Panelists also discussed the relationship between racial inequalities, discrimination and socioeconomic status and stress exposure.

Other panels topics included “Stress Biology and Disease Pathways,” “Measuring Stress” and “Stress, Perinatal and Life Course Risks.”

Toxic Stress

Focusing on the neurodevelopmental consequences of early adversity in childhood, the second day’s keynote speaker, Charles A. Nelson III, HMS professor of pediatrics and director of research at the Division of Developmental Medicine, and Richard David Scott chair in Pediatric Developmental Medicine Research at Boston Children’s Hospital, noted that complete recovery from early toxic stress is rare, and that earlier interventions better address sensitive periods of development during which patients may be most susceptible to toxic stress.

Other speakers explored the risks associated with stress for cancer and cardiovascular disease. In her concluding remarks, Williams championed a call to action, outlining a path forward that could integrate laboratory, clinical and population scientific approaches.

As a result of the success of this symposium, Harvard Catalyst will offer pilot funding opportunities to researchers who can propose novel, interdisciplinary solutions to the complex problems stress can produce.

“The study of stress is a legitimate, cross-cutting area for human health and to address health disparities. This symposium is a continuation of a discussion we’ve been having for many years, even decades, and we look forward to advancing this important area in newly-formed working groups,” Williams said.

The Health Disparities Research Program is one of several initiatives supported by Harvard Catalyst, the Harvard University’s clinical and translational science center, which is funded by the NIH and Harvard-affiliated institutions.

The program works across Harvard schools and throughout its affiliated hospitals to promote new collaborative research, education and training opportunities to study disparities in health and health care.



About Harvard Medical School (HMS)

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“Since 1872, Harvard Medical School has been the incubator of bold ideas—a place where extraordinary people advance education, science and health care with unrelenting passion.

Whether training tomorrow’s doctors and scientists, decoding the fundamental nature of life, advancing patient care or improving health delivery systems around the world, we are never at rest. Allied with some of the world’s best hospitals, research institutes and a University synonymous with excellence, the School’s mission remains as ambitious as it is honorable: to alleviate human suffering caused by disease.”

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About Harvard School of Public Health (HSPH)

Harvard School of Public Health is dedicated to advancing the public’s health through learning, discovery and communication. More than 400 faculty members are engaged in teaching and training the 1,000-plus student body in a broad spectrum of disciplines crucial to the health and well being of individuals and populations around the world. Programs and projects range from the molecular biology of AIDS vaccines to the epidemiology of cancer; from risk analysis to violence prevention; from maternal and children’s health to quality of care measurement; from health care management to international health and human rights.

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About Harvard University.

Established in 1636, Harvard is the oldest institution of higher education in the United States. The University, which is based in Cambridge and Boston, Massachusetts, has an enrollment of over 20,000 degree candidates, including undergraduate, graduate, and professional students. Harvard has more than 360,000 alumni around the world.

Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders in many disciplines who make a difference globally. Harvard faculty are engaged with teaching and research to push the boundaries of human knowledge. For students who are excited to investigate the biggest issues of the 21st century, Harvard offers an unparalleled student experience and a generous financial aid program, with over $160 million awarded to more than 60% of our undergraduate students. The University has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a truly global education.

‘Universities nurture the hopes of the world: in solving challenges that cross borders; in unlocking and harnessing new knowledge; in building cultural and political understanding; and in modeling environments that promote dialogue and debate… The ideal and breadth of liberal education that embraces the humanities and arts as well as the social and natural sciences is at the core of Harvard’s philosophy. ’/ Drew Gilpin Faust

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* The above story is adapted from materials provided by Harvard University

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