Bacteria and pesticides found in cannabis sold in Dutch coffee shops

Lead, pesticides and potentially harmful bacteria were among the contaminants found during an investigation into cannabis sold in semi-legal “coffee shops” in the Netherlands. The research, which aimed to establish a “baseline” level of typical contamination , was carried out by the Netherlands Institute of Mental Health and Addiction (Trimbos Institute). It will be used to inform a trial starting in April in which shops in 10 municipalities will sell cannabis that is produced by licensed growers and subject to limits on contaminants. The researchers tested 50 cannabis samples, both resin and weed, bought from randomly selected sellers. One in

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