Brain specialist Dr. Daniel Amen warns that marijuana use in teens and young adults is linked to higher rates of mental issues as research on cannabis' health impact develops.

Another study on the effects of marijuana use published in the Psychology of Addictive Behaviors in September showed that the drug had an indirect negative relationship with grades among a cohort ...

"This study shows that marijuana disrupts the natural reward circuitry of the brain, making marijuana highly salient to those who use it heavily," study author Dr. Francesca Filbey, an associate ...

The effects of chronic marijuana use on the brain may depend on age of first use and duration of use, according to new research. Researchers for the first time comprehensively describe existing ...

Casual marijuana use linked to brain abnormalities New study on impact on adults who smoke just once or twice a week Casual marijuana use may come with some not-so-casual side effects.

New research on marijuana's impact on personal health shows that it's not just bank accounts that can shrink due to long-term recreational use. The drug may also decrease brain volume. “Long ...

Marijuana and brain health: It turns out that one of the possible benefits that marijuana may have on the brain is as a potential guard against Alzheimer's disease.

Frequent marijuana use can negatively affect brain activity, resulting in reduced memory capabilities, according to information published Tuesday in the medical journal JAMA Network Open.

The researchers looked at brain differences between casual marijuana users and non-users at one point in time and saw a correlation. That is, the users' brains were different from non-users'.

Heavy marijuana use over a long period of time may severely damage the brain, according to a new review of previous research. In the review, the researchers also described the case of a 52-year ...

The brain continues to develop well into the 20s, and even into the 30s, said Breiter, who is concerned about the long-term impacts of marijuana use on the developing brain.

Another study on the effects of marijuana use published in the Psychology of Addictive Behaviors in September showed that the drug had an indirect negative relationship with grades among a cohort ...