Scientific interest in cannabis has accelerated at an unprecedented pace, with 2025 producing more peer-reviewed research than any year on record.
Across oncology, neurology, psychiatry, pain, metabolism, immunology, addiction, agriculture and more, researchers published over 420 new studies examining the plant’s therapeutic potential, safety profile, cultivation techniques, and real-world impacts of both the plant and policies surrounding it.
With that in mind, below is a comprehensive, study-by-study breakdown of every one of those findings, offering a clear snapshot of what modern cannabis science reveals.
Clinical Trial Finds THC Significantly Reduces Alcohol Consumption in Heavy Drinkers
In a randomized trial of heavy drinkers, administration of THC led to a marked reduction in alcohol intake and craving compared with placebo, suggesting THC might serve as a potential harm-reduction tool for alcohol use disorder.
Study: Cannabis Use Linked to Lower Rates of Chronic Rhinosinusitis and Fewer Sinus Surgeries in New Study
A large retrospective analysis found that regular cannabis users had significantly reduced incidence of chronic rhinosinusitis and required fewer sinus surgeries compared with non-users, hinting at a potential protective or anti-inflammatory effect of cannabis on sinonasal health.
Study: CBD Shows Antispasmodic and Antidiarrheal Benefits in New Gastrointestinal Study
Researchers reported that CBD reduced intestinal spasms and normalized bowel motility in preclinical models, also decreasing frequency and severity of diarrhea — pointing toward therapeutic promise for conditions like IBS or other GI disorders.
Study: CBD-Rich Marijuana Eases Anxiety and Repetitive Behaviors in Autistic Children, Finds Study
In an observational cohort of autistic children, use of CBD-dominant cannabis was associated with reductions in anxiety, irritability, and repetitive behaviors, along with improvements in social responsiveness; parents reported these changes within weeks of use.
Study Finds CBD Shields Primary Neurons From Rotenone-Induced Toxicity Through TRPV1 Pathways
In neuronal cell cultures exposed to rotenone (a Parkinson’s-linked neurotoxin), CBD treatment preserved neuron viability by activating TRPV1 receptor pathways, reducing oxidative stress and limiting mitochondrial dysfunction — indicating neuroprotective potential against environmental toxins.
Clinical Trial: CBD Shown to Reduce Behavioral Symptoms in Older Adults With Vascular Dementia
In a randomized clinical trial, older adults with vascular dementia receiving CBD experienced reductions in agitation, anxiety, and aggression, along with modest improvements in mood and caregiver-reported quality of life—suggesting CBD may help manage neuropsychiatric symptoms in dementia.
Study: CBD Found to Reduce Emotional, Molecular and Alcohol-Seeking Effects of Prenatal Alcohol Exposure
In animal models exposed prenatally to alcohol, CBD treatment later in life reduced anxiety-like behaviors, normalized stress-related brain molecular markers, and lowered propensity for alcohol seeking—pointing to therapeutic potential in mitigating developmental alcohol exposure effects.
Study: CBD Shown to Prevent Key Scarring Processes on the Eye’s Surface, Study Finds
Laboratory research demonstrated that topical CBD application suppressed fibroblast activation and collagen deposition on ocular surface tissues—processes linked to scarring and impaired vision—suggesting a possible role for CBD in preventing postoperative or injury-induced eye fibrosis.
Study Finds Google Maps To Be the Most Accurate Tool for Identifying U.S. Marijuana Dispensaries
A validation study comparing multiple public databases of cannabis retailers concluded that Google Maps listings had the highest accuracy and coverage for locating licensed marijuana dispensaries across the United States—useful insight for researchers and consumers tracking dispensary availability.
Study: CBD Boosts the Effectiveness of Phenobarbital in Newborn Seizure Model, Study Finds
In neonatal animal models, adding CBD to phenobarbital therapy enhanced seizure suppression more than phenobarbital alone — suggesting CBD could improve outcomes in newborn seizure disorders when used as an adjunct.
Study: Liposomal CBD Injections Show Weeks-Long Pain Relief and Steady CBD Levels in Goats
Researchers found that a single liposomal-CBD injection provided prolonged analgesia lasting several weeks and maintained stable blood CBD concentrations in a goat model, offering a proof-of-concept for long-acting cannabinoid formulations.
Study: CBD Shows Antimicrobial Potential Against Oral Pathogens, Study Finds
Laboratory assays demonstrated that CBD inhibited growth of several common oral bacterial pathogens and reduced biofilm formation, indicating possible uses in dental hygiene products or treatments for oral infections.
Study: 3D-Printed CBD Oral Delivery
Scientists developed a novel 3D-printed oral tablet embedded with CBD that allowed controlled release and improved dosing precision, marking a step forward for customizable cannabinoid pharmaceuticals.
CBD-Rich Cannabis Extract Shows Strong Immunomodulatory Effects in T-Cell Study
In a lab study analyzing human T-cells, a CBD-rich cannabis extract significantly modulated cytokine production and shifted T-cell differentiation toward a more regulatory phenotype, indicating potential for autoimmune and inflammatory-disease treatment.
Study: Cannabidiol Suppresses Tumor Growth in Colon Cancer by Targeting Metabolic Pathways
Preclinical models of colon-cancer showed that CBD inhibited tumour growth and altered cancer-cell metabolism—specifically reducing glycolysis and lipid synthesis—pointing to novel metabolic targets for cannabinoid therapy in oncology.
Cannabis Extract Shows Strong Lethal and Repellent Effects Against Chagas Disease Vector
Researchers found that certain cannabis-derived extracts were highly toxic to triatomine bugs (the vector for Chagas disease) and also acted as strong repellents, opening new possibilities for vector-control interventions in tropical disease management.
CBD May Reduce Some Cellular Harms from Doxycycline Exposure, Study Finds
In cell culture models, CBD reduced indicators of mitochondrial stress and DNA damage that were induced by doxycycline treatment, suggesting a potential protective co-therapy role when using certain antibiotics.
Autistic Adults Report 73 % Short-Term Symptom Relief After Using Inhaled Cannabis
Survey data from adults with autism spectrum disorder revealed that 73 % reported immediate relief in anxiety, irritability, or sensory overload symptoms after inhaled cannabis, with improvements lasting several hours; long-term outcomes remain untested.
Cannabinoids Like CBGA, CBN and CBG May Reduce HIV-Related Pain
Leveraging human cohort data and experimental models, scientists observed that CBGA, CBN, and CBG were associated with reduced incidence of neuropathic pain among people living with HIV, supporting minor-cannabinoid research in pain management.
Hemp Flour Significantly Boosts Bread’s Nutrition With Only Minor Effects on Flavor
Researchers at the University of Parma found that incorporating 10 % to 25 % hemp flour into wheat bread increased protein content, introduced omega-3 linolenic acid, enhanced essential amino acids and raised antioxidant capacity; sensory panel ratings remained favorable up to 15 % hemp substitution.
Cannabis Leaf Diet Helps Protect Farmed Fish From Parasitic Liver Flukes, Study Finds
In aquaculture research, tilapia fed a diet supplemented with cannabis leaves showed significantly lower incidence of liver fluke infection and improved liver health, suggesting a novel plant-based strategy for fish farm disease management.
IGC-AD1 Targets Agitation in Alzheimer’s With a Cannabis-Based Investigational Therapy
A phase 2 clinical trial of IGC-AD1, a cannabis-derived compound, demonstrated reduction in agitation and aggression in patients with Alzheimer’s disease, offering hope for non-standard medications in symptom management.
Balanced THC/CBD Formula Protects Developing Brain Cells From Hypoxia-Related Damage
In vitro models of neonatal brain ischemia showed that a 1:1 THC:CBD formulation preserved neuronal viability and reduced oxidative stress after hypoxic insult, suggesting potential neuroprotection in perinatal brain injury scenarios.
CBD and CBDV Combination Reduces IBD-Related Gut Inflammation by Targeting Key Immune Receptor
Experimental models of inflammatory bowel disease (IBD) found that combined cannabidiol (CBD) and cannabidivarin (CBDV) markedly reduced gut inflammation via modulation of the P2X7 receptor and subsequent immune signalling pathways, pointing to a novel therapeutic direction.
Cannabis Use Linked to Reduced Risk of Oral Cancer, New Meta-Analysis Finds
A comprehensive meta-analysis of epidemiological studies revealed a statistically significant association between cannabis use and a lower incidence of oral cavity and pharyngeal cancers, though authors caution about confounding factors and call for prospective research.
THC Strengthens Brain-Based Pain-Filtering in Fibromyalgia, New Clinical Trial Finds
In a randomized trial, patients with fibromyalgia using a THC-dominant cannabis formulation showed enhanced functional MRI responses in brain regions associated with endogenous pain inhibition, accompanied by reductions in pain intensity and improved quality of life.
Hemp Shows Strong Antiviral Activity Against Japanese Encephalitis Virus
Laboratory tests revealed that hemp seed extracts inhibited replication of the Japanese encephalitis virus in neuronal cell models, suggesting antiviral properties beyond cannabinoids and pointing to new bioactive targets in hemp.
Higher Light Intensity During Flowering Found to Boost CBD Production in Hemp
An agronomic study on hemp cultivation demonstrated that increasing light intensity during the flowering phase led to higher CBD concentrations in harvested biomass, indicating lighting strategy is a significant factor in cannabinoid yield optimization.
Study: Medical-Grade THC Vape Delivers Precise Microdoses While Retail Pens Hit Hard But With Unstable Output
Comparing medical-grade and retail THC vape devices, investigators found that the medical product provided consistent microdoses and predictable pharmacokinetics, whereas retail pens showed greater variability in dosing and higher peak exposures, highlighting concerns over consumer device reliability.
Study: CBD Shown to Suppress Growth Pathways in Aggressive Breast Cancer Cells
In vitro research revealed that cannabidiol (CBD) downregulated key oncogenic signalling pathways in triple-negative breast cancer cells, including PI3K/AKT and MAPK pathways, leading to reduced proliferation and increased apoptosis.
