Pet owners should take caution when purchasing canned food for their animals, a study from the University of Missouri-Columbia warns.
Most canned foods are lined with a resin that contains BPA, or Bisphenol-A, an industrial chemical that can seep into the food contents. Research in recent years has suggested it could interfere with brain development, particularly for infants and children. However, there are few studies on pets' exposure to BPA.
Scientists at Mizzou led an experiment where they fed canned food to two groups of dogs that normally eat dry food from a bag. One group was fed canned food advertised as being BPA-free and another group received canned food without that label. Blood and fecal samples revealed that after two weeks, BPA concentrations rose threefold for both groups.