Nicotine dependence

This study tests whether a daily kava drink can help active smokers who don't plan to quit reduce their smoking and lower their risk of lung cancer. Twenty adult smokers will take kava daily for several months. Researchers will check how well participants stick with the regimen, …

This study aimed to see if giving smokers access to different e-cigarette flavors (menthol, non-tobacco, or tobacco) helps them stop smoking regular cigarettes. Over 600 adult smokers were assigned to different flavor groups and tracked for 13 weeks. However, the trial was termin…

This study tested a program to help HIV-negative transgender women and men who have sex with men who also have a substance use disorder stick with PrEP, a daily pill or shot that prevents HIV. Participants received counseling and text support, with extra help for those who strugg…

Transgender and gender diverse adults smoke at higher rates than the general population, and stigma, discrimination, anxiety, and depression may make quitting harder. Researchers at Massachusetts General Hospital are adapting an existing smoking cessation program called QUIT, whi…

This observational study at Yale University is recruiting 200 people who are already taking part in another trial where they may receive a serotonergic psychedelic (like psilocybin or LSD) or a placebo. Researchers want to understand how these substances change the brain's inform…

This study tested whether a non-invasive brain stimulation technique called deep rTMS could change brain activity and reduce smoking in people with schizophrenia. Researchers used brain scans to measure changes in brain connections and smoking behavior. The study was small and en…

This study tested a care coordination and motivational interviewing program for women who recently had a preterm birth. The goal was to see if the program was feasible and acceptable to participants. Only 13 women enrolled before the study was terminated, so the findings are very…