New Study Suggests Adults Over 30 Should Rethink Regular Marijuana Use

As marijuana becomes more widely accepted across the U.S., a new study suggests adults over 30 may want to reconsider how often they use it. Researchers from The University of Queensland found that continued cannabis use into your 30s could negatively impact key areas of adult life—such as education level, income, home ownership, relationships, and overall happiness.

Interestingly, the study found that these negative effects weren’t seen in those who only used marijuana occasionally during their younger years. The real concern, according to the research, is long-term or habitual use well into adulthood.

That said, the study has its limitations. The data was based on a specific population in Australia, and success markers like home ownership or relationship status can vary widely depending on culture and socioeconomic factors. The study also didn’t factor in other drug use, which could have influenced some of the outcomes.

Still, the bottom line is pretty straightforward: moderation matters. If marijuana use is starting to impact your motivation, job performance, finances, or personal relationships, it may be time to take a step back.

The takeaway? Trying marijuana in your younger years doesn’t necessarily derail your future—but continuing regular use into adulthood could come with unintended consequences.