How does marijuana affect the brain? Psychological researchers examine impact on different age groups over time

The impact of cannabis on cognitive impairment was greater than that of alcohol or tobacco use. Long-term cannabis users also had smaller hippocampi (the region of the brain responsible for learning and memory). Interestingly, individuals who used cannabis less

Suicide Attempts During Heavy Drinking Episodes Among Individuals Entering Alcohol Treatment in Warsaw, Poland PMC

Since previous investigations of why individuals died by suicide have collectively revealed that 70 to 90 percent had a major psychiatric disorder at the time of death, the researchers suggest that psychiatric disorders in this group were often not