Each month our editorial team sifts through hundreds of papers and curates notable findings—for practitioners and informed readers who want to stay current with the evidence. Subscribe to the monthly Research Digest for expert analysis and concise summaries of key papers.
Researchers are testing several new and old approaches to treat addiction. The most attention is on psychedelic-assisted psychotherapy — that is, giving a drug like psilocybin, MDMA, or ibogaine together with careful therapy — and on new drug compounds tested in animals. Some early clinical trials and many reviews call these approaches “promising,” but most evidence is still limited, mixed, or from small studies. At the same time, for some substances like methamphetamine there are no approved medicines that clearly reduce use. Animal studies and new chemical versions of old drugs show strong early results, but human safety and larger trials are still needed. Researchers also stress that the drug effect and the therapy around it (preparation, setting, and follow-up) both matter for how well treatment works.
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This review says that the main active part of cannabis, THC, acts at the brain's CB1 receptor to produce rewarding effects, reinforce smoking, and can lead to dependence and withdrawal. Evidence comes from animal and human studies. Higher THC strength raises blood THC levels and may raise the chance of…
Researchers looked at sixty studies to see how biology, social life, and psychology mix together to affect substance use problems and mental health. They found that brain systems, genes, childhood experiences, parenting, personality, and existing mood or anxiety problems all interact. This makes addiction and related psychiatric symptoms complicated, especially…
This paper reviewed studies since 2016 to identify cannabis-related factors linked with higher risk of psychosis. It found that personal and genetic vulnerability, earlier age of first use, more frequent use, higher-THC products, how cannabis is taken, and using other drugs all raise the odds of cannabis-related psychosis. Evidence that…
Project Twenty21 collected real-world data from people in the UK who sought prescribed medicinal cannabis. Data at treatment start were available for 2,833 patients and 1,410 had 3-month follow-up for anxiety, chronic pain or PTSD. On average, patients reported improvements in condition-specific symptoms and in general health and quality of…
This paper is a first look at whether the fast-acting psychedelic 5‑MeO‑DMT might help people with alcohol use disorder. The authors reviewed existing studies in humans and animals and found early signs that 5‑MeO‑DMT can cause intense mystical feelings and a loss of self-boundaries, and that it changes brain rhythms…
This systematic review looked at animal and human studies of MDMA (the main ingredient in ecstasy) for social problems seen in autism. It found that, in animal models (mostly rodents), postnatal MDMA caused more social behavior and less asocial behavior, and that some human reports and a small pilot trial…
