Scientists have discovered that primary teeth—the ones we lose as children—act as detailed biological records of our earliest years, capturing important information about environmental exposures during critical stages of development.

Researchers from Norway's MoBaTooth biobank, which houses the world's largest collection of primary teeth, found that these tiny structures contain biological data that can help us understand health challenges that begin in infancy and childhood. By studying teeth alongside other data from the Norwegian Mother, Father and Child Cohort Study, scientists can now trace how early exposures shape lifelong wellness. Read the full story →

Today's takeaway: Your childhood teeth are like a time capsule of your health history—and scientists are finally learning how to read them.