Ask a scientist: Are human-derived hormones like estrogen harming fish in Puget Sound?

Hormones such as estrogens that humans create in their own bodies are entering Puget Sound through wastewater, raising concerns about their effects on fish and other wildlife. We spoke with Puget Sound Institute scientist Maya Faber about how environmental exposure to human-derived estrogen can alter the reproductive cycles of male and female fish. The effects have been shown among English sole in Puget Sound but scientists wonder if endangered Chinook are also at risk.

We spoke with Puget Sound Institute scientist Maya Faber about this research and the reasons behind ongoing concerns about the impacts of fish exposures to estrogens and other hormones.