What’s going on with fluoride?

The conversation about fluoride’s health benefits has exploded
recently after a US federal toxicology report, court ruling and
independent scientific review all called for updated risk-benefit
analysis. Ian Sample hears from Catherine Carstairs, professor of
history at the University of Guelph in Canada, about how attitudes
to fluoridation have evolved, and Oliver Jones, professor of
chemistry at RMIT University in Australia, about where the science
stands today. Help support our independent journalism at
theguardian.com/sciencepod