Cannabis Varieties and strains
It is often claimed that sativa strains provide a more stimulating psychoactive high while indica strains are more sedating with a body high.
However, this is disputed by researchers.
According to the United Nations Office on Drugs and Crime (UNODC),
The UNODC states that cannabis often contains 5% THC content, resin “can contain up to 20% THC content”,
That “Cannabis oil may contain more than 60% THC content.”
A 2012 review found that the THC content in marijuana had increased worldwide from 1970 to 2009. It is unclear, however, whether the increase in THC content has caused people to consume more THC or if users adjust based on the potency of the cannabis. It is likely that the higher THC content allows people to ingest less tar.
At the same time, CBD levels in seized samples have lowered, in part because of the desire to produce higher THC levels and because more illegal growers cultivate indoors using artificial lights.
This helps avoid detection but reduces the CBD production of the plant.
Australia’s National Cannabis Prevention and Information Centre (NCPIC) states that the buds (infructescences) of the female cannabis plant contain the highest concentration of THC, followed by the leaves.
In addition to The stalks and seeds have “much lower THC levels”.
The UN states that the leaves can contain ten times less THC than the buds, and the stalks.