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Around 6 deaths a year linked to clubbing in the UK

A 15-year retrospective study found that physical assault and excessive MDMA use are primary causes of nightclub deaths in the UK. The study reveals a significant number of young women are at higher risk of dying from drug-related causes.

SourceBMJ Group·JournalEmergency Medicine Journal·TypeObservational study·DateMar 3, 2026

Findings of study on how illegally manufactured fentanyl enters U.S. contradict common assumptions, undermining efforts to control supply

A recent study by Carnegie Mellon University found that illegally manufactured fentanyl primarily enters the US via counties along the Canadian border. The analysis revealed these counties accounted for over 40% of large fentanyl seizures in 2023-2024, despite comprising only 3.1% of the national population. This finding undermines eff...

Study finds one in five US adults use multiple drugs, revealing new patterns in substance use

A recent US study found that nearly one in five adults have used multiple drugs in the past year, revealing new patterns in substance use. The study identified four distinct patterns of drug use among prescription, recreational, and illegal users, highlighting the need for tailored prevention and treatment strategies.

SourceUniversity of Colorado Anschutz Medical Campus·JournalAmerican Journal of Public Health·DateApr 2, 2025

Warning signs may not be effective to deter cannabis use in pregnancy: Study

A new study published in the Journal of Studies on Alcohol and Drugs suggests that mandatory warning signs at cannabis dispensaries may not be effective in deterring pregnant users. In fact, many participants reported distrust towards the content of the warnings, viewing them as stigmatizing or negative. The researchers interviewed 34 ...

SourceJournal of Studies on Alcohol and Drugs·JournalJournal of Studies on Alcohol and Drugs·TypeSurvey·DateFeb 6, 2025

Study finds changes in opioid use outcomes after passage of medical marijuana laws

A new study at Columbia University Mailman School of Public Health found no changes in opioid outcomes among the general population with the states' passage of medical and recreational marijuana laws. Decreases in opioid outcomes were observed among people reporting cannabis use but not when both medical and recreational use laws existed.

SourceColumbia University's Mailman School of Public Health·JournalInternational Journal of Drug Policy·DateJan 13, 2025

“Long COVID” continues to evade diagnosis

A national cohort study found that no routine clinical lab test can aid in diagnosing post-acute sequelae of SARS-CoV-2 infection. Ongoing inflammation is thought to contribute to symptoms like anosmia and PASC. Researchers also discovered a link between SARS-CoV-2 and diabetes risk, independent of PASC symptoms.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·TypeNews article·DateAug 12, 2024

We can’t distinguish wild coca plants from those grown to make cocaine

A new study reveals that coca plants grown for cocaine production are difficult to distinguish from wild-growing varieties based on leaf shape and size. The researchers used genetic analysis to estimate when different coca species and varieties originated, suggesting a longer evolutionary history than previously thought.

SourceOxford University Press USA·JournalMolecular Biology and Evolution·TypeObservational study·DateJul 10, 2024

Smartphone swabs provide convenient toxicology testing

A new study published in Clinical Chemistry and Laboratory Medicine reveals that smartphone swabs can successfully detect drugs on phone surfaces. The method, which uses dry swabs, identified MDMA, cocaine, and THC as the most common substances, with other drugs including ketamine, LSD, and heroin also detected.

SourceDe Gruyter·JournalClinical Chemistry and Laboratory Medicine (CCLM)·TypeExperimental study·DateApr 22, 2024

Police seizures of psychedelic drugs are soaring throughout the United States

Seizures of psilocybin, a hallucinogenic compound found in psychedelic mushrooms, have surged by 369% across the US since 2017, according to a new study. The highest number of seizures were recorded in the Midwest and West regions, with nearly quadrupled amounts of seized drugs.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalDrug and Alcohol Dependence·TypeData/statistical analysis·DateFeb 6, 2024

Cannabis has no clear effect on treatment of opioid addiction, US study finds

A new peer-reviewed study suggests that cannabis is having no significant effect on people's use of opioids, taken outside of medical guidance. The findings have substantial implications for U.S. treatment programs, which still require patients to abstain from cannabis before qualifying for potentially life-saving treatment.

SourceTaylor & Francis Group·JournalThe American Journal of Drug and Alcohol Abuse·TypeSystematic review·DateJan 16, 2024

New study maps ketamine's effects on brain

A new study published in Cell Reports mapped ketamine's effects on the brains of mice, revealing widespread structural changes in the dopamine system after repeated use. The findings suggest that targeting specific areas of the brain with ketamine therapy could minimize unintended effects.

SourceColumbia University·JournalCell Reports·TypeExperimental study·DateDec 4, 2023

New process for screening old urine samples reveals previously undetected ‘designer drugs’

Researchers developed a more efficient way to find emerging designer drugs in urine samples, uncovering new synthetic opioids, benzodiazepines, and stimulants that evaded initial screening. The approach can support public health and safety by enabling swift identification of new substances.

SourceUniversity of British Columbia·JournalAnalytical Chemistry·TypeData/statistical analysis·DateNov 15, 2023

In states that legalized cannabis, frequent cannabis use became more common in young adults who are not in college, OSU study finds

An Oregon State University study found that young adults not in college became more frequent users of cannabis and met criteria for cannabis use disorder after state legalization. The prevalence of frequent cannabis use increased by 5 percentage points among non-college young adults, while college students saw a smaller increase.

SourceOregon State University·JournalAmerican Journal of Preventive Medicine·TypeData/statistical analysis·DateAug 2, 2023

New research finds dramatic increase in illegal ketamine seized by authorities, sparking concern about potential dangers of rising recreational use

A significant increase in illicit ketamine seizures in the US has raised concerns about the risks of non-medical and recreational use, as well as the presence of fentanyl. The study found a 349% rise in seizures from 2017 to 2022, with the highest numbers reported in Tennessee, Florida, and California.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalJAMA Psychiatry·TypeObservational study·DateMay 24, 2023

Occasional cannabis use during pregnancy may be enough to impact fetal growth significantly

Research found that occasional cannabis use during early pregnancy can significantly reduce birth weight, even if continued use is not observed. Continued exposure results in largest deficiencies, with newborns exposed to marijuana throughout gestation being nearly 200g lighter and having smaller head circumferences.

SourceFrontiers·JournalFrontiers in Pediatrics·TypeObservational study·DateMay 16, 2023

Cocaethylene cardiotoxicity in emergency department patients with acute drug overdose

A recent study published in Academic Emergency Medicine found that combining cocaine with ethanol increases the risk of cardiac arrest, higher lactate concentrations, and lower occurrence of myocardial injury. The study suggests that cocaethylene, a metabolite of cocaine and ethanol, is more toxic than either substance alone.

SourceSociety for Academic Emergency Medicine·JournalAcademic Emergency Medicine·DateMar 1, 2023

Pregnant women’s cannabis usage in legalized US states raises calls for screening

A new national study found pregnant women in legalized US states are far more likely to use cannabis, with a 4.6 times higher rate compared to CBD-only states. The study emphasizes the need for prenatal and primary care providers to screen and counsel patients regarding cannabis use in pregnancy.

SourceTaylor & Francis Group·JournalThe American Journal of Drug and Alcohol Abuse·TypeObservational study·DateNov 29, 2022

Study examines current state regulations, public health risks of growing medicinal and recreational marijuana market

A new study urges regulators to take a closer look at the health and safety risks of the growing medicinal and recreational cannabis market. The research team found that many pesticides in cannabis cultivation were highly unlikely to be used, but still detected, highlighting the need for stricter regulations.

SourceArizona State University·JournalEnvironmental Health Perspectives·TypeData/statistical analysis·DateSep 14, 2022

Legalizing recreational cannabis in the U.S. has increased frequency of use by 20%

A new study published in the journal Addiction found that recreational cannabis legalization in US states led to a 20% increase in cannabis use frequency, particularly among identical twin pairs. The study analyzed data from over 1,400 individuals and suggested that recreational legalization caused an increase in cannabis use.

SourceSociety for the Study of Addiction·JournalAddiction·TypeObservational study·DateAug 25, 2022

Adolescents more vulnerable to cannabis addiction but not other mental health risks

A new study led by UCL and King's College London researchers found that adolescents are three times more likely to develop a cannabis addiction than adults. However, they do not appear to be at increased risk of subclinical depression or anxiety. In contrast, adult users who become addicted may experience worsening mental health symptoms.

SourceUniversity College London·JournalJournal of Psychopharmacology·TypeObservational study·DateJun 30, 2022

Cannabis causes birth defects in susceptible mice

A new study reveals that THC can cause birth defects in genetically predisposed mice, highlighting the risks of cannabis consumption during pregnancy. Pups with a mutation in Hedgehog signalling developed brain and face defects, emphasizing the need for further research into human health implications.

SourceThe Company of Biologists·JournalDevelopment·TypeExperimental study·DateOct 5, 2021

Cannabis use rises during Australian COVID lockdown, but less meth on the streets

A wastewater study conducted in Australia during the 2020 COVID-19 lockdown found that cannabis use surged, while methamphetamine (ice) use plummeted. The research, led by the University of South Australia, analyzed wastewater samples from 20 treatment plants across the country and showed a significant increase in cannabis use nationwide.

SourceUniversity of South Australia·JournalEnvironmental Science & Technology Letters·TypeData/statistical analysis·DateAug 17, 2021