Researchers find winds affecting emissions from incinerators play role, though diet still thought to be largest factor

Toxic chemicals in breast milk have been identified in mothers living near waste incinerators in the UK, a study has found.

The study looked at complex chemicals called polychlorinated biphenyls (PCBs) and dioxins. These are found in the fumes from burning waste and can persist in the environment for a long time. They can also accumulate in the fat in our bodies, with more than 90% coming from food.