THC levels 'are identical across cannabis strains'

The levels of psychoactive chemicals tetrahydrocannabinol (THC) and cannabidiol (CBD) are identical across cannabis strains, despite street names and rumours, according to a new study.
Stories behind the unusual names given to street strains of cannabis have been tackled by the research from the University of British Columbia (UBC).
However, the typical chemical levels used to differentiate strains may not indicate their true pharmacological value, the studies suggest."It is estimated that there are several hundred or perhaps thousands of strains of cannabis currently being cultivated," said Professor Susan Murch, who teaches chemistry at the university's Okanagan campus."We wanted to know how different they truly are, given the variety of unique and exotic names."Although cannabis farmers and strain developers have historically selected breeding plants based on their production of THC and CBD, there are limited records of strain parentage.Professor Murch explained: "People have had informal breeding programmes for a long time."In a structured programme we would keep track of the lineage, such as where the parent plants came from and their characteristics."With unstructured breeding, which is the current norm, particular plants were picked for some characteristic and then given a new name."
THC levels 'are identical across cannabis strains'

Informal cannabis breeding undermines analysis of chemicals
Due to the informal breeding, the chemical breakdown of many of these strains has been practically unknown - until now.
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