Look around your home. A food wrapper, a shampoo bottle, a couch cushion and many other items very likely contain synthetic chemicals that were never tested for long-term safety before reaching store shelves. In most countries, chemicals are assumed safe until proven harmful, and companies don’t have to demonstrate their products are safe before selling them. Instead, the responsibility falls on regulators to prove the harmfulness after chemicals are already in widespread use, a process that is expensive and slow. In many cases, regulators spend years building a case against one harmful chemical, only for manufacturers to then swap it for a structurally similar substitute that starts the process over. This pattern has a name: “regrettable substitution,” or the “toxic treadmill,” a cycle in which one harmful chemical is replaced by a structurally similar one that turns out to be equally problematic, requiring years of new research to prove. For example, when bisphenol A (BPAs), a synthetic compound used to make plastic, was found to interact with the human endocrine system, product manufacturers began to remove it from their products and replace it with BPS, a similar set of compounds that have also been linked to endocrine and estrogen disruption. PFAS (forever chemicals) have been found in the bodies of North Atlantic long-finned pilot whales (Globicephala melas) thousands of miles from any factory. They are also found in human bodies. Image by Vsevolod Rudyi. CC BY 4.0. “As a consumer we think, these people are taking care of me, they…This article was originally published on Mongabay

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