Cognition and Long-Term Use of Ganja (Cannabis)
Jeffrey Schaeffer, Therese Andrysiak, J. Thomas Ungerleider
Science July 24, 1981 DOI: 10.1126/science.6972600
Summary
AI-generated from the abstractIn ten people who were born, raised, and educated in the United States and had histories of heavy or prolonged cannabis use, cognitive function was not impaired. Urine samples from all ten contained cannabinoid metabolites above 50 nanograms per milliliter, and the cannabis they used had a tetrahydrocannabinol content exceeding 8.0 percent.
Study at a glance
| Characteristics | Observational study Peer reviewed |
|---|---|
| Sample size | 10 |
| Population | People born, raised, and educated in the United States with histories of heavy or prolonged cannabis use |
| Key finding | No impairment of cognitive function was found in heavy or prolonged cannabis users. |
Abstract
Neuropsychological variables and urine cannabinoid metabolites were evaluated in ten subjects born, raised, and educated in the United States and having histories of heavy or prolonged use of cannabis. No impairment of cognitive function was found. Cannabinoid metabolites in excess of 50 nanograms per milliliter were present in the ten urine samples. The tetrahydrocannabinol content of cannabis exceeded 8.0 percent.