The relationship between cannabis and dementia has come under increasing scientific scrutiny as both the potency and use of cannabis have surged worldwide. With cannabis becoming more mainstream, questions have arisen about its long-term impact on cognitive health, memory, and the risk of dementia. Recent studies shed new light on these critical issues, challenging the common belief that cannabis is relatively harmless. This comprehensive blog explores the latest evidence, including major statistical studies, changes in cannabis potency, and the real implications for memory and brain health.
Working Memory and Processing Speed
A recent University of Colorado study, published in JAMA Network Open, found that:
- 63% of heavy cannabis users and 68% of recent users showed reduced brain activity on tests of working memory.
- Heavy users continued to show deficits even after six weeks without cannabis, suggesting a persistent impact.
- Reduced activation was noted in critical brain areas such as the dorsolateral prefrontal cortex and anterior insula, both vital for decision-making and attention.
These deficits are not just theoretical. Impaired working memory affects real-life tasks (like holding a conversation, learning new information, or solving quick problems) and leads to slower reaction times and reduced ability to adapt to change.(Source: WRD News)