Tests show drug causes eels to become hyperactive and damages their muscles, possibly hindering their ability to migrate

For eels, the drugs don’t work. Tiny concentrations of cocaine flushed into rivers causes eels to become not only hyperactive but to suffer from muscle wastage, impaired gills and hormonal changes.

The impact of traces of cocaine on the physiology of European eels could be hindering their epic migrations through the oceans to reproduce, according to researchers who examined the impact of the drug.

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Read More Cocaine in rivers harming endangered eels, study finds

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