Environmental Chemicals are Wreaking Havoc to Last a Lifetime

Elizabeth Grossman, writing in Ensia:

BrianAJackson; iStockPhoto

BrianAJackson; iStockPhoto

Some chemicals — lead, mercury and organophosphate pesticides, for example — have long been recognized as toxic substances that can have lasting effects on children’s neurological health, says Bruce Lanphear, health sciences professor at Simon Fraser University. While leaded paint is now banned in the U.S., it is still present in many homes and remains in use elsewhere around the world.

Children can also be exposed to lead from paints, colorings and metals used in toys, even though these uses are prohibited by U.S. law (remember Thomas the Tank Engine), and through contaminated soil or other environmental exposure as well as from plastics in which lead is used as a softener. Mercury exposure sources include some fish, air pollution and old mercury-containing thermometers and thermostats. While a great many efforts have gone into reducing and eliminating these exposures, concerns continue, particularly because we now recognize that adverse effects can occur at exceptionally low levels.