Canned soup linked with BPA spike in urine
"We've known for a while that drinking beverages that have been stored in certain hard plastics can increase the amount of BPA in your body," said lead author Jenny Carwile, a doctoral student in the Department of Epidemiology at Harvard School of Public Health.
"This study suggests that canned foods may be an even greater concern, especially given their wide use."
The chemical BPA is an endocrine disruptor that has been shown to interfere with reproductive development in animal studies at levels of 50 micrograms per kilogram of body weight and higher, though it remains uncertain if the same effects cross over to humans, according to the Environmental Protection Agency.
This study did not measure BPA levels by micrograms per kilogram of body weight, but rather by micrograms per litre of urine, so a direct comparison to the EPA-cited danger level in animals was not possible.
However, previous studies have linked