(CNN) Brown trout can become addicted to the illegal drug methamphetamine when it accumulates in waterways, according to new research. Researchers exposed 40 trout to methamphetamine for a period of eight weeks. Then every other day the researchers checked whether the trout were suffering from methamphetamine withdrawal by giving them a choice between water containing the drug or water without. A further 40 trout were used as a control group. Trout that had spent eight weeks in water containing methamphetamine selected water containing the drug in the four days after moving to freshwater.

Source: CNN July 06, 2021 21:56 UTC