Sterility in Frogs Caused by Environmental Pharmaceutical Progestogens, Study Finds

Frogs appear to be very sensitive to progestogens, a kind of pharmaceutical that is released into the environment. Female tadpoles that swim in water containing a specific progestogen, levonorgestrel, are subject to abnormal ovarian and oviduct development, resulting in adult sterility. This is shown by a new study conducted at Uppsala University and published in the journal Aquatic Toxicology. Leer más.