Opinion: Toxic Time Bombs

Decades of evidence point to the untoward health effects of endocrine disruptor exposures, yet little is being done to regulate the chemicals.

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ISTOCK, MATTEODESTAFANOHormones—chemical messengers secreted by internal (endocrine) glands to control body functions—were discovered as the 20th century began, launching the field of endocrinology. Within a few decades, several natural steroids including the sex hormones estrogen, progesterone, and testosterone had been identified. But since the 1930s, we have been increasingly exposed to many endocrine disruptors—artificial organic substances that mimic natural hormones and can threaten human health.

Although the U.S. has been slow to control endocrine disruptors, pressure is mounting for legislators to make significant regulatory changes in Europe, although the European Commission has also dragged its feet. In December 2015, the European Union’s Court of Justice decreed that the Commission had breached EU law by failing to adopt scientific criteria for identifying and regulating endocrine disruptors. The European Parliament met in February 2017 to consider a proposal defining those criteria, but member states decided to postpone a decision. France did not wait for the E.U. to take effective action. As of January 2015, new French legislation outlawed any contact between the known endocrine disruptor bisphenol A (BPA) and beverages or food.

The challenge to developing appropriate regulations for endocrine disruptors is ...

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