Depression, anxiety, and trauma diagnoses and symptoms were associated with higher odds of cannabis use among pregnant women in California. These results support previous qualitative findings that pregnant women self-report using cannabis to manage mood and stress3,4 and suggest a dose-response association, with higher odds of cannabis use associated with co-occurring depressive and anxiety disorders and greater depression severity. However, research is needed to determine the direction of these associations, because cannabis use might also cause or worsen mental health problems during pregnancy.
There were no significant impacts on physical or emotional functioning, and low-quality evidence of improved sleep and patient global impression of change. Evidence for effectiveness of cannabinoids in CNCP (Chronic Non-Cancer Pain) is limited. Effects suggest that number needed to treat to benefit is high, and number needed to treat to harm is low, with limited impact on other domains. It seems unlikely that cannabinoids are highly effective medicines for CNCP.
Preventing the Use of Marijuana: Focus on Women and Pregnancy addresses the established health risks of marijuana use to pregnant women and their children, as well as the expanding evidence base on other potential harms of use during pregnancy. I encourage you to use this guide to be informed of the adverse health consequences and potential effects of marijuana use, and to promote healthy decision-making among pregnant and postpartum women.
Elinore F. McCance-Katz, M.D., Ph.D. Assistant Secretary for Mental Health and Substance Use U.S. Department of Health and Human Services
University of Southern California said unproven health claims coming from pro-marijuana bots on Twitter illustrate “how false statements may drown out solid science on social media”
Cannabis Surveillance With Twitter Data: Emerging Topics and Social Bots
Published Online: December 2019
Objectives. To use publicly accessible data from people who post to Twitter to rapidly capture and describe the public’s recent experiences with cannabis.
Methods. We obtained Twitter posts containing cannabis-related terms from May 1, 2018, to December 31, 2018. We used methods to distinguish between posts from social bots and nonbots. We used text classifiers to identify topics in posts (n = 60 861).
Results. Prevalent topics of posts included using cannabis with mentions of cannabis initiation, processed cannabis products, and health and medical with posts suggesting that cannabis could help with cancer, sleep, pain, anxiety, depression, trauma, and posttraumatic stress disorder. Polysubstance use was a common topic with mentions of cocaine, heroin, ecstasy, LSD, meth, mushrooms, and Xanax along with cannabis. Social bots regularly made health claims about cannabis.
Conclusions. Findings suggest that processed cannabis products, unsubstantiated health claims about cannabis products, and the co-use of cannabis with legal and illicit substances warrant considerations by public health researchers in the future. (Am J Public Health. Published online ahead of print December 19, 2019: e1–e6. doi:10.2105/AJPH.2019.305461)