It's no secret.

Endocrine disruptors are chemicals that can interfere with endocrine (or hormone) systems at certain doses.

Found in many household and industrial products, endocrine disruptors are substances that "interfere with the synthesis, secretion, transport, binding, action, or elimination of natural hormones in the body that are responsible for development, behavior, fertility, and maintenance of homeostasis (normal cell metabolism).

They are sometimes also referred to as hormonally active agents, endocrine disrupting chemicals, or endocrine disrupting compounds.

Food is a major mechanism by which people are exposed to pollutants. Diet is thought to account for up to 90% of a person's PCB and DDT body burden.

Farmed salmon from all over the world have been shown to contain a variety of man-made organic compounds.

Read more:

https://en.wikipedia.org/wiki/Endocrine_disruptor