Lancet

Current sort has key articles at the top. Click on "Article Date" to sort by date, click on specific "tag" to view all articles in that category.

Title Tags Notes
Daily Marijuana Use And Highly Potent Weed Linked To Psychosis study, Potency, Lancet, Psychosis

The study authors consider high-potency cannabis to be products with more than 10 percent tetrahydrocannabinol or THC, the compound responsible for the drug's psychoactive effects. The fact that consuming high-THC cannabis products has a greater risk is concerning, Lisdahl says, because these products are more common in the market now.

Now a new study published Tuesday in the The Lancet Psychiatry shows that consuming pot on a daily basis and especially using high-potency cannabis increases the odds of having a psychotic episode later.

cannabis use to variation in the incidence of psychotic disorder across Europe Research, study, Lancet, Potency, Psychosis

In conclusion, our findings confirm previous evidence of the harmful effect on mental health of daily use of cannabis, especially of high-potency types. Importantly, they indicate for the first time how cannabis use affects the incidence of psychotic disorder. Therefore, it is of public health importance to acknowledge alongside the potential medicinal properties of some cannabis constituents the potential adverse effects that are associated with daily cannabis use, especially of high-potency varieties.

4-year prospective cohort study Lancet, study, pain

In conclusion, cannabis use is common in people with chronic non-cancer pain who have been prescribed opioids, and interest in medicinal use of cannabis is increasing. We found no evidence that cannabis use improved patient outcomes; those who used cannabis had greater pain and lower self-efficacy in managing pain. Furthermore, we found no evidence that cannabis use reduced pain interference or exerted an opioidsparing effect.

Medical marijuana laws and adolescent marijuana use in the USA from 1991 to 2014: results from annual, repeated cross-sectional surveys Lancet, usage, youth, journal, Studies

Our findings, consistent with previous evidence, suggest that passage of state medical marijuana laws does not increase adolescent use of marijuana. However, overall, adolescent use is higher in states that ever passed such a law than in other states. State-level risk factors other than medical marijuana laws could contribute to both marijuana use and the passage of medical marijuana laws, and such factors warrant investigation.

Lancet Study Lancet, Studies

The study found that 10th and 12thgrade use in Colorado increased significantly after medical marijuana. 
The study did not look at recreational marijuana
The study did not look at marijuana use over an extended period of time....read more on link

Subscribe to Lancet