THC and CBD in blood samples and seizures in Norway: Does CBD affect THC-induced impairment in apprehended subjects?

Fatally injured drivers in Norway 2005–2015—Trends in substance use and crash characteristics

“…The hypothesis related to the increased potency of cannabis products is rather complicated to verify in Norway. An analysis of cannabis products seized in Norway in 2013-2014 did not reveal high-potency cannabis (203). Meanwhile, our results…”

Distribution of tetrahydrocannabinol and cannabidiol in several different postmortem matrices

“…However, it is unclear whether cannabis products which contain high concentrations of CBD, have less pronounced harmful effects, and if users of this cannabis are less susceptible to psychosis and development of addiction compared to users of cannabis where CBD is found in much lower concentrations. The content of CBD is reported to be much higher in hashish compared to marijuana [11].…”

Cannabis Use Is Associated With Increased Levels of Soluble gp130 in Schizophrenia but Not in Bipolar Disorder

“…The absence of the inflammation-modulatory phenomenon of Cannabis in BD may resonate with earlier reports on the neutral or potentially adverse effects of Cannabis use on BD symptoms and disease evolution ( 39 , 40 ). Furthermore, we speculate that our findings regarding the effect of Cannabis self-administration on circulating immune marker levels likely reflect the relatively high CBD content of available Cannabis products in the streets of Norway ( 41 ). On the other hand, the impact of the psychotropic cannabinoid THC on human brain functions has been highly controversial.…”