Something is not nothing: Hair-tested substance use and cognitive functions in a large community sample of young adults

Key Points

• Reduced cognitive performance is associated with prevalent substance use among young adults, reflecting potential long-term impacts.
• The study highlights effect sizes that are small-to-moderate, showing a significant relationship between recreational use and cognition.
• Analysis involved a large community sample, emphasizing the widespread issue of substance use and its cognitive consequences.
• Implications suggest that cognitive effects of recreational substance use may be underestimated, calling for more attention to this area.