Marijuana users in the 1960s were less likely to develop drug dependence than users starting around the year 2000. This trend MOST likely reflects that:
A) the THC content in marijuana has increased.
B) people started using marijuana at earlier ages.
C) marijuana is now consumed via multiple routes.
D) medical marijuana is legal in a number of states.

Question

Quizplus · Accepted Answer

The THC (tetrahydrocannabinol) content in marijuana, which is the psychoactive component, has significantly increased over the years. Higher THC levels are associated with a greater risk of addiction and other negative outcomes, making modern users more likely to develop dependence compared to those in the 1960s.

Marijuana Users in the 1960s Were Less Likely to Develop