Still Smoking Weed at 30? Science Says It Might Be Holding You Back

As marijuana continues to gain social and legal acceptance for recreational and medicinal use, new research is prompting adults—especially those over 30—to take a closer look at their long-term habits.

If you’re still lighting up in your 30s, a recent study from The University of Queensland in Australia suggests there may be more at stake than just a relaxed evening.

🚨 Smoking Marijuana After 30: What the Science Suggests

The study, conducted over several years, analyzed how adult marijuana use impacts personal success.

Researchers found that individuals who continued to use cannabis into their 30s were more likely to report lower life satisfaction and reduced achievement in several key areas, including:

Educational attainment

Income level

Home ownership

Long-term relationship status

Self-reported happiness

Interestingly, the study found that these effects were not evident among individuals who only used marijuana during their teens or early twenties—suggesting the timing and duration of use may play a critical role.

⚠️ What Are the Limitations?

Before jumping to conclusions, researchers also emphasized a few important caveats:

1. Demographics Were Narrow

The data was based on a localized sample—specifically, mothers in Australia—with some of the source data dating back to the early 1980s. This may limit how applicable the results are to other groups, including men, younger generations, or international populations.

2. “Success” Is Subjective

Markers like home ownership and relationship status don’t define success for everyone. For example, many modern professionals prefer renting or living a minimalist, mobile lifestyle. Likewise, being single does not equate to failure.

3. Other Substances May Play a Role

Researchers acknowledged that they couldn’t fully separate the effects of cannabis from the influence of other drugs. Some participants may have also used alcohol, tobacco, or synthetic substances, which could have impacted the results.

🧠 So, What Should You Take Away From This?

This study isn’t about blaming or shaming—it’s about understanding the potential long-term effects of a habit that’s become normalized in many circles.

While early, occasional marijuana use may not pose serious risks, continued or heavy use into your 30s could influence your motivation, finances, and emotional well-being—especially if it’s not balanced with a healthy lifestyle.