The Black Death’s Surprising Impact on Today’s Oral Health

The Black Death in the 14th century may have triggered a significant shift in the human oral microbiome, now associated with modern chronic diseases. Research analyzing ancient dental calculus revealed changes in microbial communities post-pandemic, influenced by dietary shifts. This study offers a vital understanding of the evolution of human microbiomes and their impact on current health issues. New research suggests that the Second Plague Pandemic might have influenced the development of oral microbiomes that contribute to modern-day chronic disease. The mid-14th century witnessed a devastating event known as the Black Death or the Second Plague Pandemic, which resulted in the death of 30-60% of Europe’s population, significantly altering the trajectory of European history. Recent research conducted by teams from Penn State and the University of Adelaide indicate that this pandemic may have inadvertently influenced the human oral microbiome. The changes in diet and hygiene practices following the plague could have led to a transformation in the oral microbiome, toward one that contributes to chronic diseases in modern-day humans. “Modern microbiomes are linked to a wide range of chronic diseases, including obesity, cardiovascular disease, and poor mental health,” said Laura Weyrich, associate professor of anthropology, Penn State. “Uncovering the origins...