What is DES?
Diethylstilbestrol (DES) is a synthetic (man-made) hormone. It is the most potent estrogenic compound known – more powerful than natural estrogen. It is one of the general classes of synthetic chemicals called 'endocrine disrupting chemicals (EDCs)' that compete with natural hormones for receptor slots within the body. Studies have shown that the timing of exposure to hormones, and their mimics, may be as important as the dosage level.