Effect of cannabis use in people with chronic non-cancer pain prescribed opioids: findings from a 4-year prospective cohort study.
How is it used? Studies show that very little THC is released in the air when a person exhales.
People charged under marijuana laws may end up with criminal records that hurt their plans for college or finding a job. There is also "synthetic marijuana" — manmade drugs that are chemically similar to THC — that can be dangerously strong. Dreger, M.
Marijuana withdrawal can be a bit like caffeine withdrawal: It's usually worse a day or two after someone stops using marijuana. Even though marijuana is a mind-altering drug, it does not appear to have a lasting effect on cognitive function in adults.
Other recent research suggests an increased risk of preterm births.