Environmental phenols are found in a wide range of common consumer products. They include preservatives in packaged foods, parabens in shampoos and bisphenol A (BPA) in plastic dishware, so humans have broad exposure to them. Some of these environmental phenols are known to have cardiac toxicities. Now, a study is revealing their adverse impact on the heart's electrical properties. Researchers used data from the Fernald Community Cohort, which includes nearly 10,000 people. One goal of the study was to identify any changes in EKG parameters. The heart is driven by electrical activity, so anything affecting its electrical properties can have...