Persistent environmental toxins already accumulate in animal tissues during the fetal stage, research finds‎

Persistent organic pollutants (POPs) begin to accumulate in the tissues of mammals already during the fetal stage, according to new research from the University of Oulu, Finland. The animal-model study found that environmental toxins had built up in the tissues of sheep raised in clean organic production, and that the same substances were transferred in notable amounts to the developing fetuses' adipose tissue.