Dawn of agriculture linked with poor start to life in ancient Atacama, Chile

Related Articles

Related Articles

Learning to cultivate crops and other agricultural food – rather than relying on hunter-gathering – is often thought of as a key milestone in the history of humanity.

However, new evidence from the University of Otago and the Universidad de Tarapacá in Chile indicates that the adoption of agriculture was associated with poor maternal and infant health in the ancient Atacama Desert.

This work provides the first direct evidence for maternal-foetal transfer of a nutritional deficiency in an archaeological sample.

Study lead author and PhD candidate Anne Marie Snoddy, of the Department of Anatomy, says agriculture does provide some evolutionary advantages, including increased resources for population growth.

“However, crop foods are quite poor in many nutrients needed by growing babies and their mothers. Women and children are particularly vulnerable to the negative effects of agricultural intensification and resource scarcity.”

The research team’s findings appear in the International Journal of Paleopathology.

Subscribe to more articles like this by following our Google Discovery feed - Click the follow button on your desktop or the star button on mobile. Subscribe

“Our new paper sheds light on to the impact of the agricultural transition on these past people, showing rare evidence for newborns and foetuses, including a possible mother-baby pair, with signs of pathology related to food deficiencies.

“This kind of direct evidence of maternal-foetal transfer of a nutritional deficiency is not something we have ever seen in the archaeological record.”

This research aimed to assess if there was any impact on the reduction of dietary diversity with the adoption of agricultural food practices, by investigating disease evidence on the skeletons of individuals from a transitional Early Formative Period site (3,600-3,200 years before present).

All the infants at this site showed potential evidence for nutritional insufficiency in the form of scurvy (vitamin C deficiency).

“Scurvy leaves its signature on bones. Prolonged vitamin C deficiency causes poor bone formation and leaky blood vessels. Small amounts of blood collect at muscle attachment sites and this can cause abnormal bone to form,” Ms Snoddy says.

“By analysing the patterning of this abnormal bone formation throughout the skeleton, we can identify people who suffered from a period of vitamin C deficiency during their life, and this can give us information about the general quality of their diet. Scurvy is associated with low dietary diversity and generally poor nutrition.”

Senior author Dr Sian Halcrow, of the Department of Anatomy, says there has been a focus archaeologically on the exploration of the pre-agricultural Chinchorro people and associated elaborate mummy burials.

However, recent research highlights periods of increasing infant mortality during the transitional period from hunter-gatherer to agricultural practices, and biological anthropologists are beginning to investigate the reasons for this.

“This work is important for the wider interpretation of the environmental context of the Atacama Desert, in northern Chile, in which these populations lived. This desert is one of the harshest environments in the world, with the least amount of rainfall (<2 mm per year) of any hot desert.

“The stresses on these people may have gotten worse with the adoption of agricultural food crops, which are poor sources of many important nutrients,” she says.

Ms Snoddy says the researchers interpreted that the vitamin C deficiency was possibly due to periodic food shortages from El Niño events in the area.

“In this paper, we argue that the extreme arid environment of the Atacama means that it is particularly ecologically unstable, with climate change causing major impact on both marine and land resources.”

Dr Halcrow says “importantly, the group’s latest findings also contribute to an understanding of the sensitive relationship between the ill health of the mother and infant in the past”.

“Ongoing work on bone and tooth chemistry and microfossil analyses of dental plaque may provide further insights into the transition to agriculture at this time.”

This project was supported by a Marsden Grant from the Royal Society of New Zealand, a CONICYT Anillo award, and a University of Otago Doctoral Scholarship.

University of Otago

Header Image Credit: NASA/JPL-Caltech

- Advertisement -

Download the HeritageDaily mobile application on iOS and Android

More on this topic


Study Suggests the Mystery of The Lost Colony of Roanoke Solved

The Roanoke Colony refers to two colonisation attempts by Sir Walter Raleigh to establish a permanent English settlement in North America.

Drones Map High Plateaus Basin in Moroccan Atlas to Understand Human Evolution

Researchers from the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH) have been using drones to create high-resolution aerial images and topographies to compile maps of the High Plateaus Basin in Moroccan Atlas.

The Kerguelen Oceanic Plateau Sheds Light on the Formation of Continents

How did the continents form? Although to a certain extent this remains an open question, the oceanic plateau of the Kerguelen Islands may well provide part of the answer, according to a French-Australian team led by the Géosciences Environnement Toulouse laboratory.

Ancient Societies Hold Lessons for Modern Cities

Today's modern cities, from Denver to Dubai, could learn a thing or two from the ancient Pueblo communities that once stretched across the southwestern United States. For starters, the more people live together, the better the living standards.

Volubilis – The Ancient Berber City

Volubilis is an archaeological site and ancient Berber city that many archaeologists believe was the capital of the Kingdom of Mauretania.

Pella – Birthplace of Alexander The Great

Pella is an archaeological site and the historical capital of the ancient kingdom of Macedon.

New Argentine fossils uncover history of celebrated conifer group

Newly unearthed, surprisingly well-preserved conifer fossils from Patagonia, Argentina, show that an endangered and celebrated group of tropical West Pacific trees has roots in the ancient supercontinent that once comprised Australia, Antarctica and South America, according to an international team of researchers.

High-tech CT reveals ancient evolutionary adaptation of extinct crocodylomorphs

The tree of life is rich in examples of species that changed from living in water to a land-based existence.

Fish fossils become buried treasure

Rare metals crucial to green industries turn out to have a surprising origin. Ancient global climate change and certain kinds of undersea geology drove fish populations to specific locations.

Archaeologists Discover Viking Toilet in Denmark

Archaeologists excavating a settlement on the Stevns Peninsula in Denmark suggests they have discovered a toilet from the Viking Age.

Popular stories