A group of researchers at The University of Queensland investigated the success outcomes associated with users of amphetamines and marijuana. Researchers analyzed information from more than 8000 mothers and 2000 children regarding substance use at the ages of 21 and 30. The team found that utilization led to decreased success rates according to nine particular criteria, which include:
- Earnings
- Property ownership
- Current status of the relationship
- Reported happiness
Significantly, these reduced success rates were observed exclusively among individuals who persisted in smoking marijuana beyond the age of 30.
The Constraints of the Research
Before you start feeling anxious about needing to break the habit by the time you hit 30 (or that you should have done it already), try not to worry too much. This study presents several limitations that indicate its results may not be universally applicable.
