Freeway air pollution linked to brain damage in mice

It is well known that air pollution from cars and trucks on Southern California freeways -- a combination of soot, pavement dust and other toxic substances -- can cause respiratory disease, heart attacks, cancer and premature death.

Now, exposure to pollution particles roughly one-thousandth the width of a human hair has been linked to brain damage in mice, including signs associated with memory loss and Alzheimer’s disease, according to a USC study in the journal Environmental Health Perspectives.

In a statement, senior author Caleb Finch, an expert on the effects of inflammation and holder of USC's ARCO/William F. Kieschnick Chair in the Neurobiology of Aging, said “You can’t see them, but they are inhaled and have an effect on brain neurons that raises the possibility of long-term brain health consequences of freeway air.” (read more)