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Our medications are leaking into waterways — and may be changing fish behavior
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An Atlantic salmon (Salmo salar) in Iceland. Fish and other aquatic creatures are increasingly affected by pharmaceutical pollution in the waterways they call home; now, scientists are trying to figure out how that might affect their behavior. Cavan Images/Getty Images hide caption
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An Atlantic salmon (Salmo salar) in Iceland. Fish and other aquatic creatures are increasingly affected by pharmaceutical pollution in the waterways they call home; now, scientists are trying to figure out how that might affect their behavior.
Cavan Images/Getty ImagesA fish walks into a pharmacy ...
It's the start of a joke – with echoes in reality. Sort of.
Fish aren't being prescribed anti-anxiety drugs. But they are experiencing the effects.
That's because fish and other aquatic creatures are being affected by increasing levels of drug pollution – from human waste or pharmaceutical factory runoff – that then seep into our waterways. Researchers have found more than 900 different pharmaceutical ingredients in rivers and streams around the world. And they're not yet sure how this could change animals' behavior in the wild.
"We can't, you know, dump a bunch of pharmaceuticals into the river," says Jack Brand, biologist at the Swedish University of Agricultural Sciences.