Studying hair of ancient Peruvians answers questions about stress

University of Western Ontario ^ | Dec 9, 2009 | Unknown

[decimon]

Recent studies show that one in three Canadians suffer from stress and the number is on the rise. But stress isn't a new problem.

While the physiological state wasn't properly named until the 1930s, new research from The University of Western Ontario proves stress has plagued humans for hundreds, and perhaps thousands of years.

The first study of its kind, published in the Journal of Archaeological Science, detected the stress hormone cortisol in the hair of ancient Peruvians, who lived between 550 and 1532 A.D.

When an individual is stressed – due to real or perceived threats – cortisol is released into nearly every part of the body, including blood, saliva, urine and hair.

Emily Webb, a PhD candidate at Western in Archaeological Science and the study's lead author, says the findings are important because it will allow us to better understand how ancient people behaved and felt during their time on Earth but more importantly, to better understand stress and how it affects us today.

"By studying the lives of people using traditional archeological methods like surveying and excavation and combining that with new research techniques like sampling ancient hair specimens, we can get a good picture of what life was like and how our ancestors may have responded to life-changing experiences like illness and disease," explains Webb.

Analysis of cortisol levels in ancient hair allows researchers to assess stress during a short, but critical, period of an individual's life. For this pilot study, the Western researchers selected hair samples from 10 individuals from five different archaeological sites in Peru, and analyzed them in segments to determine cortisol levels.

While many of the individuals studied showed high stress levels right before death, Webb noted that a majority also experienced multiple episodes of stress throughout their final years of their life, again proving that much like today, stress was very much apart of ancient Peruvian's daily lives.

###

Contributing to the Western research were members of the Faculty of Social Science and the Schulich School of Medicine & Dentistry including Webb, Steven Thomson (Department of Physiology and Pharmacology), Andrew Nelson (Department of Anthropology), Christine White (Department of Anthropology, Canada Research Chair in Bioarchaeology and Isotopic Anthropology), Dr. Gideon Koren (Departments of Physiology and Pharmacology, Medicine, Paediatrics, Ivey Chair in Molecular Toxicology), Dr. Michael Rieder (Departments of Physiology and Pharmacology, Medicine, Pediatrics, Lawson Research Institute, Robarts Research Institute, CIHR-GSK Chair in Paediatric Clinical Pharmacology) and Dr. Stan Van Uum (Department of Medicine and Lawson Research Institute).

MEDIA CONTACT: Jeff Renaud, Senior Media Relations Officer, 519-661-2111, ext. 85165

[stuartcr]

I think stress is very much a part of most people’s lives, regardless of where/when they lived.

[decimon]

Duress in tress ping.

[Sacajaweau]

Wonder how much this grant is??? Looks like they can keep it up for years. Too stressful for me...:0)

[lovecraft]

Yup, today is the stress of the every day rat race, while many years ago the stress was finding food, shelter, and running from the assmunchosaurus. If the choice is between working late or trying to not get your ass slapped off by a lion or grizzly, well, sign me up for working weekends.

[Renegade]

With Obummer as POTUS ,I must have cortisol levels off the charts.

[stuartcr]

Me too, might even get some comp time out of it...

[goseminoles]

LOL@ assmuchasaurus.

[fieldmarshaldj]

"running from the assmunchosaurus"

[Tijeras_Slim]

detected the stress hormone cortisol in the hair of ancient Peruvians, who lived between 550 and 1532 A.D.

I'd think living that long you'd learn how to chill.

[lovecraft]

Well that assmunchosauraus would certainly induce running and cause a stroke from stress.

[SunkenCiv]

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[wildbill]

Stress = shaky part

[colorado tanker]

many of the individuals studied showed high stress levels right before death

I guess that means most of them never got through all of Kubler-Ross's stages of grief to "acceptance."

[SunkenCiv]

Just be glad no one has found any ancient Peruvian underwear...