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Earliest Evidence of Gigantism-Like Disease Found in 3,800-Year-Old California

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« on: April 08, 2014, 09:09:55 pm »

Earliest Evidence of Gigantism-Like Disease Found in 3,800-Year-Old California Skeleton

Posted by Blake de Pastino on March 24, 2014 in anthropology, archaeology, burials, California, Early Californians, health, mass graves, Native Americans, nature, news, Paleoindians, prehistoric, Recent, science, Windmiller Phase | 8694 Views | 5 Responses

The remains of a man buried 3,800 years ago in a richly decorated California grave bear some unusual but unmistakable features — a protruding brow, a lantern jaw, thick leg and arm bones, and teeth so crowded together that at one point they erupt in rows three deep.

According to a new study of the ancient skeleton, they are signs of acromegaly, a rare disorder of the endocrine system that’s similar to gigantism.

The California man is among the very few examples of acromegaly ever found in the archaeological record, and it’s the oldest ever identified, according to Dr. Eric Bartelink, a physical anthropologist at California State University, Chico.

“It is the earliest evidence of this condition in humans, the only documented case from prehistoric California, [and] one of the more complete skeletons documented with this condition,” he said in an interview.

Acromegaly has only been identified definitively at two other archaeological sites in North America, Bartelink said: in the remains of a male buried in New Mexico about 600 years ago, and an unsexed 1,100-year-old skull found in Illinois.

The newly found case in California adds to the scant literature of the disorder, he said, potentially improving how acromegaly may be diagnosed in other remains, and also shedding light on the history of the disease, perhaps even how it was interpreted in the ancient past.
Burial 37 Skull, acromegalyThe skull of the man found in the site known as Burial 37 bears the distinct marks of acromegaly, new research finds. The black arrow indicates where the man’s right eye tooth erupted just below his nose. (Photo by Eric Bartelink/Phoebe Hearst Museum)

The man, believed to have been in his mid-30s at the time of his death, was found in a burial mound with 176 other bodies near the Central Valley town of Elk Grove.
[Read about recent research into a grislier mass grave nearby: "Mass Grave of ‘Prodigal Sons’ in California Poses Prehistoric Mystery"]

Labeled as Burial 37, the grave was originally excavated in the 1930s and dated to 3,750 to 3,950 years old.

The man was part of a hunter-gatherer culture known as the Windmiller, one of the earliest sedentary societies in the Central Valley, usually identified by its distinct burial practices, Bartelink said.

Windmillers typically buried their dead laying flat and face-down, rather than in a flexed position, with the heads pointing west. The deceased were also often sent off with a fine complement of grave goods, Bartelink said.

“The mortuary assemblages are rich with projectile points, shell beads, crystal, and charmstones, suggesting a more-or-less egalitarian society compared to groups more recent in time,” he said.

In the case of Burial 37, the body was daubed with red ochre on the head, chest, pelvis, left elbow, and on both hands and feet. The grave was festooned with 48 beads made from the shells of Olivella sea snails, and another 7 ornaments crafted from abalone.

But such artifacts weren’t unique to Burial 37, and the remains give little clue as to the specific cause of the man’s death.

“It is not clear that the condition contributed to death, but it certainly could have,” Bartelink said.

“Acromegalics have a lower life expectancy and many more respiratory and cardiac issues than unaffected people.”
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