Almost all of the baby foods that parents in the United States feed their children, whether purchased at the store or prepared at home, contain detectable amounts of toxic heavy metals that can impair brain development, according to new research published Thursday, which led to renewed demands for improved regulation. "Every day that the FDA delays is another day babies' developing brains are harmed by toxic chemicals." A previous study by Health Babies Bright Futures (HBBF) found that 95% of pre-packaged baby foods tested were contaminated with toxic heavy metals including lead, arsenic, cadmium, and mercury, sparking a congressional investigation and conversations about whether homemade baby foods are a safer alternative. In an effort "to determine if homemade purees and foods purchased outside the baby food aisle have lower heavy metal levels than pre-made, store-bought baby food," the donor-funded alliance of scientists and nonprofits recently tested 288 foo