With marijuana becoming increasingly mainstream across the U.S., new research suggests that adults over the age of 30 might want to think twice about continuing regular use. A study conducted by the University of Queensland in Australia found that people who kept using marijuana into their 30s experienced setbacks in several key areas of life—such as education, income, home ownership, relationships, and overall life satisfaction.

Interestingly, these negative effects were only seen in those who continued using weed regularly after turning 30. The findings suggest that occasional use during youth may not carry the same long-term consequences.

That said, the study does come with some caveats. The research was based on data from a specific population in Australia, which may limit how well the results apply to other countries, including the U.S.