Life events can leave certain marks on the dental tissue in humans. This conclusion was made by scientists from New York University in their study, published in the journal Nature.
Traces remain on the so-called cement – a specific bone tissue that covers the root and neck of the tooth in humans and other mammals. 70% of it consists of inorganic components, and 30% of organic matter.
Scientists analyzed the teeth of 50 people aged 25 to 69 years old, taken from a collection of skeletons with already known information about their medical history, as well as lifestyle, age, illnesses and movements during life – for example, from urban to rural environment.
Cement of a 35-year-old woman with close-up with dark “rings” corresponding to reproductive events
It turned out that physiologically significant events, such as pregnancy, menopause, imprisonment or systemic diseases, leave changes in the microstructure of this cement. Scientists have learned from study and read by analyzing human life.
To compile dictionaries of this type of changes in dental cement, scientists need to conduct additional research by increasing the sample of people to study their teeth. After that, specialists plan to submit a new work with a story about the traces that certain life events leave on cement.