From a laboratory in Guangzhou, a quiet but consequential proposal has emerged: that iron — an element as ancient as the earth itself — may be quietly implicated in the suffering of minds afflicted by anxiety, depression, and schizophrenia alike. Researchers at South China University of Technology have synthesized decades of fragmented findings into a unified framework, suggesting that disrupted iron metabolism within the brain may be a shared biological thread across these distinct psychiatric conditions. The work does not claim certainty about whether this imbalance drives illness or follows