DNA Analysis Reveals Complex Contamination on Shroud of Turin, Fueling Centuries-Old Authenticity Debate

A genetic analysis of the Shroud of Turin, published in March on bioRxiv, uncovers DNA from a variety of organisms, including plants, animals, and humans, raising questions about its origins. The study identified genetic material from species such as carrots, wheat, cats, and dogs. Gianni Barcaccia, the lead researcher from the University of Padova, proposes that contamination from post-Columbian expeditions may be responsible. The cloth holds human DNA, with nearly 40% traced to individuals of Indian descent, lending credence to theories of Indian roots. Radiocarbon dating of two threads indicates they date back to between 1451-1622 and 1642-1800. Andrea Nicolotti, a historian at the University of Turin, highlights that extensive handling has complicated the shroud's history. Skepticism remains among experts like Anders Götherström and Allison Mann. The 14-foot linen, first recorded in 14th-century France, displays the image of a crucified man.