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Should You Still Be Smoking Marijuana After 30? New Research Raises Questions
Marijuana is becoming increasingly accepted across the globe. From easing anxiety and managing medical conditions to recreational use, it’s gained a loyal following. But as it becomes more normalized, new research is prompting a thoughtful pause—especially for adults over the age of 30.
A recent Australian study suggests that regular marijuana use past age 30 might have unintended consequences.
What the Study Found
Conducted by researchers at the University of Queensland, the study followed over 8,000 women and 2,000 of their children. The team examined how drug use—specifically marijuana and amphetamines—impacted life outcomes at ages 21 and 30.
They measured success based on nine criteria, including:
- Education level
- Income
- Home ownership
- Relationship status
- Reported happiness
What stood out was this: adults who continued smoking marijuana after 30 scored lower across these success markers. In contrast, younger users who stopped before their 30s showed no significant setbacks.
But It’s Not That Simple: The Study’s Limitations
Before you start stressing about quitting cold turkey, it’s worth looking at the study’s flaws.
- The data was limited and outdated
The sample was drawn entirely from Australian mothers, many of whom were surveyed as far back as 1981. That makes it hard to apply the findings to today’s diverse, global population—including men, non-parents, and people with different lifestyles. - “Success” was narrowly defined
The criteria used—like owning a home or being in a relationship—don’t necessarily reflect modern ideas of success. In today’s world, plenty of happy, thriving people choose not to settle down or own property, especially with remote work and digital nomadism on the rise. - Other substances weren’t considered
The study didn’t factor in whether participants were also using other drugs like ecstasy, opioids, or synthetic substances. That means the negative outcomes observed could be linked to broader polydrug use, not marijuana alone.
So… Should You Quit Smoking Weed After 30?
The takeaway here isn’t to demonize marijuana. What the study really highlights is that occasional use in your younger years doesn’t doom your future. However, regular or dependent use in adulthood could affect things like motivation, relationships, or job performance for some people.
So if you enjoy marijuana occasionally and it isn’t interfering with your life—you’re probably fine. But if you notice it’s affecting your energy, finances, or responsibilities, it might be time to step back and reassess your relationship with it.
In short: Enjoy responsibly, stay aware of how it impacts your life, and make sure you’re still in control—not the other way around.
