Over 100 of the Most Notable Cannabis Studies Published So Far in 2026

Hundreds of peer-reviewed cannabis-related studies have been published already in 2026, highlighting the continued growth of scientific interest in marijuana, cannabinoids, hemp and the endocannabinoid system.

The studies cover a wide range of topics, including cancer, chronic pain, inflammation, neurological disorders, addiction, HIV, metabolic health, veterinary medicine, product testing, cultivation and industrial hemp uses. Many focus on cannabidiol (CBD), while others examine THC, CBG, CBC, THCV, CBN, terpenes, cannabis oils, hemp seed compounds and marijuana policy.

With that in mind, below are over 100 peer-reviewed cannabis studies, all published in 2026.

Researchers found that THC and CBD enhanced the anti-cancer effects of cisplatin in cervical cancer cells, suggesting cannabinoids may help improve the effectiveness of the chemotherapy drug.

A new study found that CBD triggered anti-cancer effects in both standard and drug-resistant breast cancer cells, including reduced viability, cell cycle disruption and increased apoptosis.

A large study found that marijuana use was associated with a modestly lower risk of several metabolic conditions, including hypertension and type 2 diabetes, although the relationship varied significantly depending on body mass index.

Researchers found that a cannabinoid-based compound reduced airway inflammation and improved respiratory markers in a model of asthma, pointing to potential therapeutic use in inflammatory lung disease.

A recent study found that CBD may strengthen the effects of a breast cancer drug, with the combination producing greater anti-cancer activity than the drug alone in lab testing.

A new review found that CBD showed potential benefit for schizophrenia symptoms, particularly in reducing psychotic symptoms, while also appearing to be well tolerated compared to many conventional treatments.

Researchers found that CBD reduced heroin-seeking behavior in an animal model by reversing brain changes associated with relapse vulnerability, supporting its potential role in addiction treatment.

A new study found that activating the CB1 receptor promoted myelin repair and improved neurological recovery in a model of multiple sclerosis, highlighting a possible new target for treating demyelinating disease.

Researchers found that CBD reduced inflammatory signaling in canine mammary cancer cells without harming cell viability, pointing to potential therapeutic value for one of the most common cancers affecting female dogs.

A new study found that several minor cannabinoids produced distinct effects on pain-sensing neurons, suggesting these lesser-known compounds may influence pain pathways in different and potentially useful ways.

Researchers found that adding cannabis seed to chicken feed improved nutritional quality without negatively affecting growth, suggesting it may serve as a useful feed ingredient in poultry production.

A recent study found that CBD blocked key HIV infection pathways in immune cells, pointing to its potential as a preventative therapy targeting early stages of viral transmission.

A new study found that a three-part combination of silver, CBC and CBG produced strong antibacterial and anti-biofilm effects against drug-resistant pathogens including MRSA, E. coli and Pseudomonas aeruginosa, while also reducing the amount of silver needed.

Researchers found that CBD may help counter cognitive decline tied to olanzapine use and a high-fat diet, with effects in rats that were comparable to a commonly used metabolic drug.

A recent study found that two synthetic cannabinoid compounds reduced glioblastoma cell viability by triggering ferroptosis, an iron-dependent form of cell death linked to oxidative stress and lipid peroxidation.

A new study found that combining CBD with methotrexate improved anti-arthritis effects in a mouse model while also reducing methotrexate-related reproductive toxicity, suggesting CBD may help enhance treatment while lowering harm.

A review of four clinical studies found that CBD oil may provide additional pain relief for dogs with osteoarthritis when used alongside conventional treatments, particularly in owner-reported and veterinary pain assessments.

Researchers found that a CBD-based nanoparticle formulation reduced brain damage, neuroinflammation and neuronal cell death in a rat model of ischemic stroke, while improving targeting of damaged brain tissue.

A new review found that CBD-infused hydrogels may offer a promising way to treat chronic wounds by improving localized delivery and harnessing CBD’s anti-inflammatory, antioxidant, antimicrobial and tissue-repair properties.

Researchers found that infrared spectroscopy provided highly accurate measurements of cannabinoid levels in medicinal marijuana oils, pointing to a faster and more efficient alternative to traditional lab testing methods.

A new study found that CBN and THCV were both effective at reducing alcohol intake, with each outperforming CBD in the tested model and highlighting the potential of lesser-known cannabinoids for alcohol-related treatment strategies.

Researchers found that cannabis-based treatments were associated with sustained improvements in migraine symptoms and quality of life over the long term, adding to growing evidence that cannabinoids may offer relief for some patients.

A recent study found that CBD may help block HIV transmission by affecting multiple mucosal pathways involved in viral entry and early-stage infection, pointing to possible new preventive applications.

A new study found that cannabinoid-based therapy was associated with reduced pain and improved overall outcomes in prostate cancer patients, suggesting it may serve as a useful adjunct treatment in symptom management.

Researchers found that CBD significantly reduced lung inflammation and related damage in a model of acute lung injury, reinforcing its anti-inflammatory potential in serious respiratory conditions.

A clinical trial found that low-dose full-spectrum CBD was well tolerated in people with HIV on long-term antiretroviral therapy, with no clinically meaningful changes in liver, kidney or HIV-control markers and some preliminary signs of potentially beneficial physiological effects.

Researchers found that an intranasal CBD nanoformulation produced higher brain concentrations than oral delivery despite a lower dose, while also improving core autism-related symptoms in a rat model.

A new animal study found that targeted nanoparticles carrying CBD and BDNF reduced amyloid burden, lowered inflammatory markers and improved cognitive function in a mouse model of Alzheimer’s disease.

A randomized, placebo-controlled trial found that sublingual CBD may reduce pain, limit strength loss and improve physical recovery after exercise-related muscle injury, with no reported adverse reactions in the study group.

A study published in Pharmaceutics found that a CBD nanoemulsion using argan oil may offer a more effective topical approach for psoriasis by improving stability, skin penetration and controlled release compared to conventional formulations.

Researchers found that CBD reduced several virulence mechanisms in Listeria monocytogenes, including motility, toxin production, and the ability to adhere to and invade host cells, pointing to potential applications in food safety and infection control.

New research found that phenolic-rich cannabis seed extracts showed strong antioxidant, anti-inflammatory and enzyme-inhibiting activity tied to skin aging, suggesting potential use in cosmetic and skin-protective formulations.

A study using registry data found that CBD-dominant full-spectrum marijuana extracts provided stronger pain relief and fewer side effects than dronabinol in older adults with chronic pain, with substantially better outcomes across pain, sleep and daily functioning measures.

A study published in Food Chemistry found that patties made with hemp seed protein came closer to beef than other plant-based alternatives in nutritional quality, digestibility, flavor and overall performance.

A new study found that a full-spectrum cannabis oil containing CBD and THC improved liver fat metabolism, reduced oxidative stress and lowered disease severity markers in a rat model of fatty liver disease.

Researchers found that cannabis-derived essential oil rich in terpenes reduced pain sensitivity, improved motor function and eased anxiety- and depression-like behaviors in a mouse model of multiple sclerosis.

A recent study found that a rectal enema combining CBD and sodium propionate outperformed either treatment alone in reducing disease severity in mice with ulcerative colitis.

A survey of small animal veterinarians in Portugal found that CBD is widely used in dogs and cats, with high satisfaction reported for conditions including chronic pain, cancer-related issues, stress and inflammation.

New research found that a porous starch-based CBD delivery system greatly increased CBD solubility and release while also inhibiting lung cancer cell growth by more than 50% in lab testing.

A study published in the American Journal of Physiology-Endocrinology and Metabolism found that nabilone increased insulin sensitivity in a small group of healthy men, while a higher dose of a CB1 receptor blocker had the opposite effect.

Researchers found that a cyclodextrin-based powder formulation preserved CBD far better than oil under light, heat and long-term storage conditions, while also producing fewer degradation byproducts.

New research found that CBG slowed pancreatic cancer cell growth and triggered multiple forms of programmed cell death, including apoptosis and ferroptosis, through ER stress-linked signaling.

A randomized clinical trial found that a 12-week aerobic exercise program reduced migraine days, attacks and medication use, while also altering levels of anandamide, a key endocannabinoid tied to pain and mood regulation.

A new review found that cannabinoids may help protect cognitive function in Parkinson’s disease by affecting synaptic plasticity, neuronal excitability and neuroinflammation, though the authors say stronger human trials are still needed.

A clinical trial found that a cannabis-based herbal formula performed similarly to lorazepam in relieving chronic insomnia, while also showing potential benefits for sleep quality and related symptoms.

Researchers found that two hemp seed hull compounds, Cannabisin A and Cannabisin B, improved blood sugar control and restored key metabolic signaling tied to diabetes and obesity in cell, liver and mouse models.

A new study found that CBD reduced breast cancer cell viability and triggered cell death through several interconnected pathways involving oxidative stress, mitochondrial dysfunction and apoptosis.

Researchers found that a CBG-dominant cannabis extract reduced the formation of fat cells while increasing markers tied to fat breakdown and energy expenditure in a lab model.

A study published in Cancer Letters found that an exosome-based oral CBD formulation improved tumor targeting and slowed the growth of aggressive triple-negative breast cancer in mice, while also altering the activity of more than 1,000 genes tied to cancer progression.

A study published in Frontiers in Pharmacology found that marijuana flower produced strong pain-relieving and neuroprotective effects in an animal model designed to mimic both Alzheimer’s-related cognitive impairment and chronic neuropathic pain.

A new study found that numerous cannabis-derived compounds may interfere with major skin cancer growth pathways tied to proliferation, invasion and metastasis.

New research published in the Journal of Surgical Orthopaedic Advances found that patients who used marijuana required significantly fewer opioids after distal radius fracture surgery while reporting pain control comparable to non-users.

A study published in Life Sciences found that the CBD-derived compound CIAC001 improved bladder function, reduced neuroinflammation and helped restore bladder-related nerve pathways in mice with spinal cord injury.

A study in adults with chronic temporomandibular disorder found that a balanced THC/CBD treatment significantly reduced pain and improved jaw mobility, with functional pain falling by roughly 90%.

A new policy analysis found that moving marijuana to Schedule III would mark the biggest federal marijuana policy shift in decades, but it would still fall well short of legalization and would not automatically make state markets federally lawful.

A new study found that a modified hemp protein reduced total cholesterol by nearly 40% and triglycerides by more than 30% in lab testing, while also increasing HDL cholesterol.

Researchers found that carefully balancing carbon dioxide levels and air exchange dramatically improved the growth of medicinal cannabis plantlets, with the biggest gains coming under elevated CO2 and moderate ventilation.

Researchers found that combining CBD with bevacizumab significantly increased cancer cell death in a lab model of non-small cell lung cancer, pointing to potential benefits from the two-drug approach.

A review of 262 studies found that marijuana plant waste may have significant industrial value, with potential uses spanning textiles, bioplastics, fuels and food products.

A new study found that frequent marijuana users did not show measurable driving impairment 12 to 15 hours after use, even when THC remained detectable in blood and oral fluid.

Researchers found that CBD may help slow the growth of Burkitt lymphoma cells and reduce a key cancer stem cell marker, suggesting potential anti-tumor effects in this aggressive cancer type.

A recent study found that even very small amounts of THC can lead to a positive urine test for days or even weeks, underscoring how low-dose exposure may still carry drug-testing consequences.

Researchers found that adults who used cannabis-infused beverages during a monitored drinking period cut their alcohol intake by about half, suggesting the products may serve as a substitute for some drinkers.

A clinical trial found that CBD suppositories were associated with reductions in menstrual and pelvic pain symptoms, pointing to a potential new localized treatment approach.

A new study found that CBD helped protect insulin-producing cells in obesity by improving cellular stress responses and boosting a metabolic pathway tied to glucose regulation and cell survival.

A cross-national study found that CBD use was more common among Americans than Europeans, with notable differences in how people in each region viewed its safety, effectiveness and everyday use.

Researchers found that CBD reduced both acute and inflammatory pain in preclinical models, including in opioid-dependent subjects, supporting its potential as a non-opioid pain management tool.

A study published in the Canadian Journal of Pain found that patients with chronic pain using medical marijuana under clinical supervision reported improvements in pain-related outcomes, anxiety, depressive symptoms and overall quality of life over 24 weeks.

A large study found that preterm infants born to mothers with a diagnosed marijuana use disorder were no more likely to develop retinopathy of prematurity than those born to mothers without such a diagnosis.

Researchers at Johns Hopkins found that most hemp-derived CBD products sold as cosmetics, haircare items, and foods or drinks were inaccurately labeled, with some containing far more or less CBD than advertised and some containing none at all.

A new study found that chromatin opening, a form of epigenetic regulation, may help explain why some hemp varieties produce far more flavonoids and cannabinoids than others, offering a potential tool for future breeding.

Researchers found that female marijuana flowers contained nearly 17 times more CBD than male flowers, and identified major genetic and metabolic differences that help explain the gap in cannabinoid production.

A peer-reviewed study found that combining CBC and CBD produced strong anti-tumor effects against drug-resistant triple-negative breast cancer, reducing invasion and shrinking tumors in both lab and animal models.

A new study found that CBD may kill cells from a rare ovarian tumor by acting through the TRPV2 ion channel and a mitochondrial pathway involved in cell survival and death.

Researchers found that activating CB1 boosted key wound-healing processes in human skin cells and accelerated wound closure in mice, suggesting cannabinoids may have therapeutic potential in tissue repair.

A new review found that CBD may help reduce the delayed secondary wave of brain damage that often follows traumatic brain injury by dampening inflammation, protecting neurons and supporting blood-brain barrier function.

A recent study found that activating the CB2 receptor reduced inflammation, improved lung function and lowered markers of immune overactivation in an animal model of COVID-19-related lung injury.

A study based on interviews with U.S. veterans found that many use marijuana to help manage symptoms such as chronic pain, PTSD, anxiety and sleep issues, but often avoid discussing it with VA clinicians due to stigma, legal concerns and fears about how it could affect their benefits.

A new scientific review found that cannabinoids such as CBD and THC may affect liver cancer-related pathways through their interaction with ion channels involved in inflammation, abnormal cell growth and cell death, highlighting their potential relevance to future prevention and treatment strategies.

Researchers found that THC significantly inhibited the growth and acid production of Streptococcus mutans, the bacteria most associated with cavities, while also sharply reducing the formation and activity of dental biofilms in laboratory testing.

A new animal study found that CBD reduced inflammatory lipid build-up in visceral fat tied to obesity, with the strongest effects seen in the fat surrounding internal organs that is most closely associated with metabolic disease.

A new analysis found no significant short-term increase in either adult marijuana use or self-reported driving under the influence of marijuana in Germany after legalization, with marijuana-impaired driving among at least monthly users actually falling slightly in the follow-up survey.

Researchers found that states with both medical and recreational marijuana laws were associated with a 9% to 11% drop in daily non-medical opioid use among people who inject drugs, while medical-only laws did not show the same reduction.

A new study found that CBD protected newborn brain cells in a lab model of oxygen deprivation by reducing oxidative stress, preserving antioxidant defenses, and helping prevent the iron buildup that drives ferroptotic cell death.

Researchers found that CBD and CBG each suppressed seizures on their own, and that combining them cut the effective CBD dose by more than 50% in a standard mouse epilepsy model while improving the overall efficacy-to-toxicity profile.

A recent study found that a full-spectrum CBD extract reduced relapse-like methamphetamine seeking and meth-triggered hyperactivity in rats more effectively than CBD isolate alone, suggesting other plant compounds may enhance CBD’s therapeutic effects.

A new review of 24 studies found that CBD may support bone formation, mineralization, fracture healing and strength through multiple pathways tied to bone turnover, inflammation and oxidative stress, though the evidence remains largely preclinical.

A new study found that low-dose CBD helped protect the developing heart from oxygen-related injury in newborn mice, reducing fibrosis, abnormal wall thickening and cell death while preserving cardiomyocyte proliferation.

A randomized, double-blind pilot study found that nightly use of an intraoral CBD gel significantly reduced jaw muscle activity in adults with temporomandibular disorders, with no adverse events reported.

Researchers found that certain hemp seed extracts showed antimicrobial activity in lab testing and, when combined with medications such as amoxicillin and miconazole, produced measurable synergistic effects.

A new lab study found that CBD demonstrated strong antibacterial activity against Enterococcus faecalis and Enterococcus faecium, including drug-resistant strains linked to hospital-acquired infections.

A new meta-analysis found that psilocybin was associated with substantial reductions in depressive symptoms among cancer patients, with benefits for anxiety appearing more mixed and less consistent.

Researchers found that psilocybin-assisted treatment may offer a meaningful new approach for PTSD, with participants reporting that it helped them engage with trauma in a different and often less confrontational way than standard therapies.

A recent study found that marijuana extracts containing CBC and THC reduced bladder cancer cell viability, slowed cell migration and triggered cancer cell death in both cell and ex vivo models.

In a randomized clinical trial, cannabis oil performed comparably to lorazepam in improving sleep quality among adults with chronic insomnia, while also leading to greater gains in overall quality of life.

Researchers found that CBD reduced leukemia cell proliferation and, when combined with imatinib, enhanced drug activity in resistant cells, suggesting it may help counter some forms of treatment resistance.

A new analysis found that medical cannabinoids produced broad neuroprotective effects in ischemic stroke models, reducing brain damage and improving neurological outcomes across multiple animal studies.

A new study found that CBD reduced neuroinflammation tied to long COVID by altering signaling pathways in brain cells, pointing to its potential to help address lingering neurological symptoms.

Researchers found that CBD improved cognitive recovery after traumatic brain injury in an animal model by reducing oxidative stress and helping protect neurons from damage.

A recent study found that CBD may help ease symptoms associated with benzodiazepine withdrawal, supporting its potential as a therapeutic aid during the withdrawal process.

Researchers found that CBD triggered cancer cell death and reduced melanoma spread in lab models, with the effects linked to an epigenetic pathway involved in tumor growth and survival.

A new study found that medical marijuana use was associated with improvements in symptoms of depression and anxiety, adding to growing evidence that some patients may benefit from it for mental health-related conditions.

A recent study found that many young adults report marijuana enhances sexual experiences by increasing pleasure, emotional connection and confidence, while also shaping communication and comfort with partners.

Researchers found that several lesser-known marijuana compounds reduced inflammation, with CBDV showing particularly strong effects on its own and combinations involving CBG or CBN producing especially notable results.

A new study found that CBD helped preserve stem cell function and slowed signs of cellular aging in lab-grown mesenchymal stem cells, suggesting potential benefits for regenerative medicine.

In a laboratory study, CBD reduced total bacterial levels and lowered key bacteria tied to gum disease in a model designed to mimic subgingival oral biofilms.

Researchers found that CBD reduced bladder pain, inflammation and fibrosis while improving bladder function in an animal model of interstitial cystitis.

A new study found that a cannabis extract triggered apoptosis and reduced the migration and invasiveness of two human breast cancer cell lines.

In a randomized controlled trial, researchers found that a single dose of CBD increased calmness and relaxation while reducing perceived effort during a 2-mile run, although it did not improve overall performance.