A new study conducted by researchers at the University of California, San Francisco (UCSF) has found that individuals who consume both cannabis and tobacco are more likely to suffer from anxiety and depression than those who use only one of these substances or none at all. Cannabis and tobacco are among the most commonly used drugs globally, and the legalization of cannabis in many countries has led to an increase in the combined use of these two substances. The study analyzed data from 53,843 American adults collected between 2020 and 2022 as part of the COVID-19 Citizens Health Study, including information on health status, drug use, and mental health. Of the participants, 4.9% reported using only tobacco, 6.9% used only cannabis, and 1.6% used both. Among those who used both substances, 26.5% reported anxiety and 28.3% reported depression, compared to 10.6% and 11.2%, respectively, among those who used neither substance. The study did not establish a direct cause-and-effect relationship, but it highlights the link between combined cannabis and tobacco use and poorer mental health.
The negative effects of cannabis on mental health have been the subject of numerous studies in recent years, with research suggesting that the drug can increase the risk of psychosis, aggression, anxiety, and stress. The United Nations has warned of the potential strain on healthcare systems caused by cannabis use. The new study adds to this body of research by demonstrating the increased risk of anxiety and depression associated with combined cannabis and tobacco use. The authors of the study recommend the inclusion of mental health resources in tobacco and cannabis cessation programs to potentially mitigate this link.
The findings of this study have important implications for public health, particularly in light of the increasing legalization of cannabis in many countries. The study underscores the need for greater awareness of the potential risks associated with combined cannabis and tobacco use and the importance of addressing mental health concerns in drug cessation programs. As the use of these substances continues to rise, it is crucial that policymakers and healthcare providers take steps to promote safe and responsible use and to support individuals who may be struggling with mental health issues related to drug use.
