High-strength cannabis changes drug users’ DNA, researchers have found. Researchers at King’s College London and the University of Exeter discovered high-potency cannabis leaves a distinct mark on DNA, which could provide insight into the biological impact of using the drug.

High-potency cannabis alters users’ DNA in ways that weaker strains don’t, new research has revealed. In particular, ultra-strong weed appears to interfere with genes related to immunity and cellular energy production,

But our recent study has just brought us closer to understanding the biological impact of high-potency cannabis use. Published in the journal Molecular Psychiatry, our study demonstrates that high-potency cannabis leaves a distinct mark on DNA.