New 'Safe' Plasticizer Linked to Fetal Development Issues

A new analysis of federal US health data indicates that Dinch, a plasticizer promoted as a safe alternative to common phthalates, may cause fetal development complications. These issues, including lower birth weight and length, can lead to long-term health problems. The chemical, formally known as 1,2-cyclohexane dicarboxylic acid diisononyl ester, is prevalent in food packaging, children's toys, and medical devices across the European Union and the United States.

The study, which examined data from over 6,600 pregnancies, found that elevated levels of Dinch in mothers were associated with an increased risk of infants being classified as "small for gestational age." Each tenfold increase in Dinch exposure correlated with a 27-gram reduction in newborn birth weight. Researchers noted that Hispanic mothers or those with lower education levels were more likely to have children affected by Dinch exposure.

This situation highlights a pattern known as "regrettable substitution," where one hazardous chemical is replaced by another with similar adverse effects. Following regulatory actions against toxic phthalates, industry significantly increased the use of Dinch. Major producers, such as BASF, have seen global production volumes surge dramatically since 2002. Health organizations express concern over the lack of comprehensive health data for Dinch, despite evidence of its migration into food products and rising levels in the general population.

Lead author Leonardo Trasande stressed the importance of properly testing chemicals before they are widely used, stating, "Chemicals should be properly tested for their safety before they become a widespread exposure for unwitting people in the general public." He suggested that the ongoing UN plastics treaty negotiations offer an opportunity to establish stronger policies for chemical oversight. Consumers can mitigate exposure by opting for plastic-free products and packaging whenever possible.