Marijuana is addictive, does not cure cancer, and is not proven to treat depression. Claims that it saves billions or grows brain cells lack evidence. While you cannot overdose from marijuana, there are still indirect and secondary risks canada.ca/en/health-cana… cancer.org/cancer/support… addictioncenter.com/drugs/marijuan… pmc.ncbi.nlm.nih.gov/articles/PMC97… medicalnewstoday.com/articles/327126. cdc.gov/cannabis/faq/i