Research from The University of Queensland suggests that marijuana use after the age of 30 could negatively affect life outcomes, including education, income, homeownership, relationship status, and happiness. The study found that adults who continued using marijuana past 30 showed lower success rates compared to those who didn’t.

However, the study has limitations. It was based on data from Australian mothers, which may not apply globally, and the success markers like homeownership and relationship status are influenced by cultural and geographical factors. Additionally, the study didn’t consider other drug use that could impact the results.

While the study suggests that marijuana use doesn’t automatically lead to failure, it implies that overuse in adulthood may hinder personal and professional success. For those using marijuana, moderation is key to ensuring it doesn’t interfere with responsibilities or motivation.

In conclusion, marijuana use is fine in moderation, but if it starts affecting key areas of life, it might be worth reassessing the habit.