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Image Credit: Germano et al., 2026, PLOS One, CC-BY 4.0
Iron Age Teeth Reveal Detailed Clues to Health and Diet in Ancient Italy
Human teeth are proving to be remarkable archives of ancient life, according to a new study published in PLOS One. By examining dental tissues and plaque, researchers reconstructed aspects of childhood health and adult diet among Iron Age communities in southern Italy.
The study focused on the Iron Age site of Pontecagnano, dating to the 7th–6th centuries BC. Using a combination of microscopic and chemical dental analyses, the team examined growth patterns preserved in teeth from a small group of individuals, allowing them to trace development during the first six years of life.
The results revealed minor episodes of physiological stress occurring around the ages of one and four years—periods associated with changes in diet and exposure to disease during early childhood. These subtle markers provide rare insight into how young children experienced health challenges in Iron Age societies.
Analysis of dental plaque (calculus) offered additional information about adult diets. Researchers identified evidence for cereals, legumes, carbohydrate-rich foods, and fermented products, suggesting a varied diet. This diversity aligns with broader archaeological evidence for increasing interaction with Mediterranean cultures, which expanded access to new food resources during this period.
While the study is based on a limited sample and does not claim to represent the entire population, it demonstrates how combined dental approaches can produce detailed reconstructions of individual life histories. The authors note that future research incorporating larger samples and techniques such as isotopic analysis could significantly deepen understanding of Iron Age communities.
Published on: 14-01-2026
Edited by: Abdulmnam Samakie
Source: Phys.org