February 2026
Cannabis
What February 2026's 7 new studies found, synthesized from the papers below. All Cannabis research →
The synthesis
Synthesized from 3 studies in the library · AI-generated, grounded in the abstracts below
Found by searching the library for Cannabis, marijuana, THC, cannabidiol, CBD, then ranked by relevance.
Research on cannabis in February 2026 focused on its potential harms and correlates. Preclinical models show that cannabinoid exposure can alter schizophrenia-related behaviors, and gestational THC exposure in rats leads to distinct biomolecular changes in offspring brains. A large US survey found that lower perceived harm and higher mental health symptoms were associated with cannabis use and support for legalization. These findings are consistent in pointing to risks, but are limited by preclinical designs and cross-sectional survey data.
Evidence by study
Direction is which way each study's own result points, not our rating of the study.
What the directions mean
- Supports:
- the study found the intervention worked, or its hypothesis held.
- Opposes:
- it found the opposite, no benefit or a harm.
- No effect:
- no significant difference either way.
- Mixed:
- effects in both directions within the same study.
- Unclear:
- the abstract does not report a direction.
| Study | Design | Sample size | Direction | Finding |
|---|---|---|---|---|
| Which Came First? Utility of Preclinical Models in Cracking the Chicken-or-Egg Relationship between Cannabis Use and Schizophrenia 2026 | review | Supports | Preclinical rodent models show that cannabinoid exposure can alter schizophrenia-like behaviors and neural effects, with outcomes shaped by route, dose, and cannabinoid type. | |
| Adult Rat Offspring Exposed to THC during Gestation Exhibit Distinct Biomolecular Changes Identified by X-ray Fluorescence Imaging and Fourier Transform Infrared Spectroscopy in Cortico-Limbic Circuits. 2026 | preclinical animal study | Supports | Adult rat offspring exposed to THC during gestation exhibited decreased copper concentrations in the corpus callosum and changes in lipid structure and content in the hippocampus. | |
| Cannabis and Psychedelics Among U.S. Young Adults: Use, Messaging Exposure, Perceptions, and Legalization Support 2026 | cross-sectional survey | 3227 | Supports | Past-6-month cannabis use was associated with lower perceived addictiveness and harm, higher social acceptability, higher mental health symptoms, more adverse childhood experiences, and greater exposure to promotional and risk messages. |
Preclinical rodent models show that cannabinoid exposure can alter schizophrenia-like behaviors and neural effects, with outcomes shaped by route, dose, and cannabinoid type.
review
Adult rat offspring exposed to THC during gestation exhibited decreased copper concentrations in the corpus callosum and changes in lipid structure and content in the hippocampus.
preclinical animal study
Past-6-month cannabis use was associated with lower perceived addictiveness and harm, higher social acceptability, higher mental health symptoms, more adverse childhood experiences, and greater exposure to promotional and risk messages.
cross-sectional survey Sample size: 3227
Points of agreement
- Cannabis exposure is associated with potential harms, including altered brain chemistry and behavior in animal models.
- Lower perceived risk and higher mental health symptoms correlate with cannabis use in young adults.
Conflicts
No notable conflicts.
Gaps
- No human clinical trials or longitudinal studies on cannabis effects are included.
- Durability of effects and long-term outcomes are not addressed.
- Dose-response relationships in humans are not examined.
- The survey does not establish causality between cannabis use and mental health symptoms.