Cannabis use can impair the brain, especially if it begins at a young age. There is evidence that consumption in adolescents may be associated with an increased risk of cognitive impairment and changes in brain structure, especially in areas such as learning, memory and attention.
However, it is important to emphasize that cannabis may also have neuroprotective properties. Some research suggests that cannabinoids in cannabis have the potential to protect brain cells from damage. This could help older people protect their brains as they age, especially from neurodegenerative diseases such as Alzheimer's and Parkinson's.
However, research on this topic is not yet complete, and a careful assessment of risks and benefits, ideally in consultation with medical professionals, is advisable.