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paleoanthropology, genetics and evolution

history of medicine

  • Body donation is a weighty matter

    Thu, 2012-01-12 16:42 -- John Hawks

    Barbara King gives a shout-out to the Forensic Anthropology Center at the University of Tennessee ("Cremation, burial, or Body Farm?").

    Twenty-two years ago, Dr. William M. Bass founded the Body Farm, or, as it's properly known, the University of Tennessee's Forensic Anthropology Center (UTFAC). Today it's a leader in a field populated by programs it inspired, as a newspaper article last week informed me.

    Last week a science news story went around that medical schools don't want to accept obese body donations ("Nobody wants a chubby corpse"). The embalming makes them too heavy for the dissection tables, the story went, and medical students are supposed to learn "normal" anatomy, not "abnormal" obese people.

    What America are these anatomy programs living in?

    At any rate, my first thought was that forensic anthropology programs would be happy to get a broad representation of donated remains. Many of the qualities that have been developed to distinguish sex and age from the skeleton depend on samples donated 80 years ago or more. Today's weightier population differs -- bone size, robusticity, and age-related changes all vary with body mass. Doing good forensics on today's population takes a more updated sample, of the sort that continues to be built beneath the Tennessee football stadium.

  • Bioethics pair

    Sat, 2010-02-13 19:23 -- John Hawks

    A pair of articles in my browser tabs refer to bioethics.

    Ronald Bailey, in Reason, writes about the "ethics" of life extension research:

    "How dare you do this research? The earth is already being raped by too many people, there is so much garbage, so much pollution."

    Ten years ago, an anti-aging researcher described this hostile reaction to her work in the pages of The New York Times. Not much has changed since then.

    I had exactly the same reaction from my undergraduate students last time I taught my anthropological genetics course. Sure, they said, people might like to live longer. But wouldn't that be a bad thing? The world is too crowded as it is.

    I'm thinking that death was far beyond the horizon of their bright young minds.

    Much of Bailey's article describes the way ethicists try to put a numerical value on happiness, multiplied by a number of years. It's not different in principle from an economist estimating the financial damage of an early and unexpected death. But somehow it seems laughable to me -- as if an individual's happiness were the only important variable. What about the value of grandparents to their descendants, or the value of living history to the whole population?

    This happened to hit my desktop at the same time as Sally Satel's article, titled "The limits of bioethics".

    She describes the history and scope of bioethics. Satel points out that the name "bioethics" was coined by Sargent Shriver, amid a burst of interest in the problems of biological and medical decisions in the late 1960's. She mentions the establishment of think tanks and expansion of the bioethicists' brief during the 1970's and 1980's, and touches on the controversies over "conservative" bioethics during the last decade.

    What is the proper role of ethicists in decision-making? Here's Satel's conclusion:

    At their best, bioethicists are scholars who study the intellectual and social history of value controversies in medicine and biotechnology. They can teach us about the technical and cultural antecedents of modern debates and show us how to engage in disciplined moral inquiry. They are skilled at drawing conceptual maps of the dilemma at hand while enumerating various ways to resolve it. In these ways, bioethicists have much to offer. But beyond this, their value is mainly cosmetic or bureaucratic. When called upon by politicians, their main task is to neutralize explosive issues or to provide ethical cover for decisions that have already been made. When physicians summon them, it is mostly to mediate disputes between patients, staff, and family members regarding end-of-life decisions. The media tap bioethicists for high-minded sound bites. In hospitals and in governmental agencies, they man the regulatory ramparts.

    Maybe some bioethicists would disagree, but I think most see themselves as scholars instead of apparatchiks.

  • "Dissection"

    Mon, 2009-04-27 21:34 -- John Hawks

    Abigail Zuger in the Science Times reviews the book, Dissection: Photographs of a Rite of Passage in American Medicine 1880-1930. The book presents a collection of photos from early 20th-century anatomy dissection classes. It seems to build on the fascination with "Body Worlds" with a historical angle:

    [H]undreds of these photographs endure. John Harley Warner, chairman of Yale’s History of Medicine program, and James M. Edmonson, curator of a museum of medical memorabilia at Case Western Reserve University in Cleveland, have culled more than 100 for what might under other circumstances be considered a coffee-table book. It is a striking, glossy, oversize volume, immensely decorative if shredded flesh and the odd bone are your idea of décor.

    But as ghoulish as the cadavers in these shots may be — they range from pristine, untouched corpses to unrecognizable piles of picked-over remains — their shock value diminishes with each turned page. Conversely, the attention commanded by the groups of young students self-consciously posed around the dissecting table never wanes.

    According to Amazon, the book is 208 pages. Here's the cover:

    Dissection book cover

    Sounds interesting -- I think I might get a copy to have in my office for students...

  • Harvey Cushing

    Fri, 2008-08-22 22:31 -- John Hawks

    At Neurophilosophy, a cool post on the photorecord of early neurosurgeon Harvey Cushing:

    Before Cushing began his career, brain tumours were considered to be inoperable, and the mortality rate for any surgical procedure which involved opening the skull was around 90%. Early in his career, Cushing dramatically reduced the mortality rate for neurosurgery to less than 10%, and by the time of his retirement in 1937, he had successfully removed more than 2,000 tumours.

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Neandertals

For years, I've worked on their bones. Now I'm working on their genes. Read more about the science studying these ancient people.

Denisova

From a finger bone of an ancient human came the record of a completely unexpected population. My lab is working on the science of the Denisova genome.

Acceleration

The advent of agriculture caused natural selection to speed up greatly in humans. We're uncovering some of the ways that populations have rapidly changed during the last 10,000 years.

Malapa

Just outside Johannesburg, the Malapa site is producing some of the most exciting finds in human evolution. This site is the headquarters of the Malapa Soft Tissue Project.