Its not known for sure if marijuana use can kill your brain cells.
More research is needed to determine if each form of use, smoking, vaping , and eating edibles , has a different effect on overall brain health.
Studies evaluating the long-term cognitive effects of marijuana use are still ongoing.
Check out the link below to read more about how marijuana use effects brain health and cognitive development: https://www.healthline.com/health/does-weed-kill-brain-cells#overview