A study from The University of Queensland suggests that continuing marijuana use past age 30 may impact income, education, and happiness. While younger users showed,
no major setbacks, adults over 30 experienced “lowered success rates” in areas like homeownership and relationships. However, the study focused on Australian women and didn’t account for other drug use, limiting its broader applicability. Moderation appears key—if marijuana starts interfering with responsibilities, it may be time to cut back.