伦敦国王学院研究人员对63项研究、超过265,000人的数据进行了系统综合评价，发现大麻使用者犯暴力行为的可能性约为非使用者的两倍1。这项研究已发表于《心理医学》期刊1，由玛塔·迪福蒂博士和罗宾·默里教授等科研人员主持1。
研究结果在不同人群中表现出显著差异1。在精神卫生护理人群中，大麻使用者暴力行为的可能性约为其他患者的2.5倍1；在犯罪定罪方面，大麻使用者被定罪的可能性为3至4倍1。此外，大麻使用者成为暴力受害者的可能性约为非使用者的1.5倍1，其中女性大麻使用者成为暴力受害者的关联性强于男性1。
研究人员强调，这些统计学意义显著的关联证明了相关性而非因果性1。
Researchers at King's College London conducted a comprehensive review of 63 studies involving over 265,000 participants and found that cannabis users were approximately twice as likely to commit acts of violence compared to non-users.1 The analysis also revealed that cannabis users faced elevated risks of becoming victims of violence themselves, with victimization rates about 1.5 times higher than among non-users.1
The disparities were more pronounced in certain groups. Among individuals in mental health care settings, cannabis users showed violence perpetration rates approximately 2.5 times higher than other patients.1 For criminal convictions specifically, cannabis users demonstrated a 3 to 4 times greater likelihood of being convicted.1 The research additionally found gender-specific patterns, with female cannabis users showing a stronger association with becoming violence victims than their male counterparts.1
The study, led by Dr. Marta Di Forti and Professor Robin Murray at King's College London's Institute of Psychiatry, Psychology and Neuroscience, was published in Psychological Medicine in 2026.1 Researchers emphasized that while the associations demonstrated statistical significance, the findings establish correlation rather than causation between cannabis use and violent behavior.1
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