A study in Science reveals that clobazam, an anti-anxiety drug found in waterways, alters salmon migration behavior. Exposed salmon reach the ocean faster and navigate dams more quickly due to reduced fear responses. While more reach the Baltic Sea, researchers warn this altered behavior may compromise their long-term survival and impact population health. The study, conducted in Sweden, tracked hundreds of salmon with implanted drug dispensers mimicking environmental pollution levels. Researchers express concern about the unpredictable effects of pharmaceutical pollution on wildlife.

Prepared by Olivia Bennett and reviewed by editorial team.