If you were looking for yet another reason to avoid bisphenol A (BPA), a new study using zebrafish has found that exposure during the early stages of life may contribute to behavioural changes and learning difficulties even into adulthood. As part of the study, zebrafish embryos were exposed to different levels of BPA during their first two days of life. The fish then spent the next ten months in clean water.
The researchers found that even after growing into adulthood in clean water, zebrafish who were exposed to BPA as embryos took two to three times as long to learn how to navigate a T-shaped maze, when compared to fish who had not had any exposure. And almost none of the fish that had been exposed to the highest levels of BPA ever learned even the first part of the maze.
BPA, which is commonly added to plastic food containers and liners, has been the subject of many conflicting studies and debates regarding its safety. Recently, Campbell’s Soup Company announced it would be removing the BPA from its cans.