1. Problem je v tom, ze synteticky estrogen EE2 se v zivotnim prostredi rozklada mnohem pomaleji, nez hormony prirodni, ktere takto predstavuji mnohem mensi problem. http://www.thermopileproject.com/wp-content/uploads/2014/06/Microbial-Degradation-of-Steroid-Hormones-in-the-Environment-and-Technical-Systems.pdf