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Chronic Marijuana Use May Change Brain’s Reward Circuit

According to researchers at the Center for BrainHealth at The University of Texas, long term marijuana use disrupts the brain’s natural reward processes. Researchers showeded, for the first time, with functional magnetic resonance imaging, that long-term marijuana users had more brain activity in the mesocorticolimbic-reward system when presented with cannabis cues than with natural reward […]

E-cigarette, Marijuana Risks Unclear To Adolescents

Although teens are well versed in the risks of smoking cigarettes, they are much less certain whether marijuana or e-cigarettes are harmful, a new study by researchers from Stanford University School of Medicine reports. Adolescents are getting clear messages from their teachers, families, peers and the media concerning the harms of cigarette smoking, but receive […]

Does Smoking Pot As A Teen Dull Adult Memory?

Teenagers who smoked marijuana daily for about three years had an abnormally shaped hippocampus, according to a new study. They also performed poorly on long-term memory tasks. The hippocampus is important to long-term memory, also known as episodic memory, which is the ability to remember autobiographical or life events. The brain abnormalities and memory problems […]

Long-term Cannabis Use Linked With Psychosis

Young adults who have used cannabis or marijuana for a longer period of time appear more likely to have hallucinations or delusions or to meet criteria for psychosis, according to a report in the Archives of General Psychiatry. Previous studies have identified an association between cannabis use and psychosis, according to background information in the […]