Below is a breakdown of more than 70 studies published in 2026 covering cannabis and compounds such as CBD, THC and CBG. The findings span pain relief, cancer, brain injury, sleep, metabolism, inflammation, wound healing and industrial hemp applications, underscoring just how broad the field has become. The title of each section below links to a full article on The Marijuana Herald.

Clinical Trial: Cannabis-Based Herbal Formula Matches Lorazepam for Chronic Insomnia Relief

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.

Hemp Seed Compounds Show Potential for Treating Diabetes and Obesity

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.

Study: CBD Triggers Cell Death in Breast Cancer Cells Through Multiple Molecular Pathways

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.

CBG-Dominant Cannabis Extract Reduces Fat Cell Formation and Boosts Fat Burning

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.

Exosome-Based Oral CBD Slows Aggressive Triple-Negative Breast Cancer

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.

Marijuana Flower Shows Neuroprotective and Pain-Relieving Effects in Alzheimer’s Model

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.

Multiple Cannabis Compounds Found to Target Key Skin Cancer Growth Pathways

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

Marijuana Use Linked to Lower Opioid Need After Wrist Fracture Surgery

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.

CBD-Derived Compound Shows Potential to Treat Bladder Dysfunction After Spinal Cord Injury

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.

THC and CBD Combination Reduces Pain, Improves Jaw Function in Patients With Chronic TMD

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%.

What Marijuana’s Move to Schedule III Will and Will Not Change Under Federal Law

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.

Hemp Protein Cuts Cholesterol by Nearly 40% in Lab Tests

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.

Optimized CO2 and Ventilation Boost Cannabis Micropropagation Biomass by Up to 282%

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.

CBD and Bevacizumab Combo Reduces Lung Cancer Cell Growth by Over 50%

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.

Hundreds of Industrial Uses for Marijuana Plant Waste

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.

No Significant Driving Impairment Found 12 to 15 Hours After Marijuana Use in Frequent Consumers

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.

CBD Shows Anti-Tumor Effects in Burkitt Lymphoma Cells

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.

Even 1 to 5 mg of THC Can Trigger a Positive Urine Test Weeks After Use, Study Finds

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.

Study: Cannabis Drinks Linked to 50% Drop in Alcohol Use, University at Buffalo Study Finds

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.

Clinical Trial Finds CBD Suppositories May Ease Menstrual and Pelvic Pain

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.

Study: CBD Protects Insulin-Producing Cells in Obesity, Boosts Key Metabolic Pathway

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.

Americans Use More CBD Than Europeans, International Study Finds

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.

Study Finds CBD Reduces Both Acute and Inflammatory Pain, Including in Opioid-Dependent Subjects

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.

Study Published in Canadian Journal of Pain Finds Medical Marijuana Linked to Improvements in Pain, Mental Health and Quality of Life

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.

Study: Maternal Marijuana Use Not Linked to Retinopathy of Prematurity in Preterm Infants

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.

Over 80% of Hemp-Derived CBD Products Are Inaccurately Labeled, Many Have No CBD, Johns Hopkins Study Finds

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.

Epigenetic “Switch” May Help Breeders Boost Hemp Flavonoids and Cannabinoids, Study Finds

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.

Study: Female Marijuana Plants Contain Nearly 17 Times More CBD Than Males, Researchers Identify the Exact Genes Responsible

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.

Study: CBC and CBD Combo Shrinks Drug-Resistant Triple-Negative Breast Cancer Tumors in Lab and Animal Models

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.

Study: CBD Kills Rare Ovarian Tumor Cells by Targeting TRPV2 Channel and Mitochondrial Pathway

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.

CB1 Activation Helps Speed Wound Healing, Reports Study

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.

CBD May Help Limit the “Second Wave” of Brain Damage After Traumatic Brain Injury, Study Finds

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.

Study: CB2 Activation May Reduce Lung Injury Caused by COVID-19

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.

Study: Veterans Say Marijuana Helps Manage Symptoms, but Many Avoid Discussing Use With VA Clinicians

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.

Study Finds Cannabinoids like CBD and THC May Influence Liver Cancer Pathways Through Ion Channels

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.

Study: THC Shown to Disrupt Cavity-Causing Bacteria and Dental Biofilms

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.

Study: CBD Reduces Inflammatory Lipid Build-Up in Visceral Fat Linked to Obesity

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.

Study: Germany Marijuana Legalization Hasn’t Increased Driving While High

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.

Study: Recreational and Medical Marijuana Laws Linked to 9–11% Drop in Daily Opioid Misuse Among People Who Inject Drugs

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.

Study: CBD Protects Newborn Brain Cells From Oxygen Deprivation by Blocking Ferroptosis Pathway

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.

Study: Combining CBD and CBG Cuts Effective CBD Seizure Dose in Half in Standard Epilepsy Model

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.

Study: Full-Spectrum CBD Extract Reduced Meth Relapse-Like Behavior Better than CBD Alone

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.

Study Finds CBD May Support Bone Formation, Strength, and Healing Through Multiple Biological Pathways

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.

Low-Dose CBD Protected Developing Heart From Oxygen-Related Injury in Newborn Animal Study

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.

Study: CBD Gel Reduced Jaw Muscle Activity in Adults With Temporomandibular Disorders

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.

Study: Hemp Seed Extracts May Enhance Effectiveness of Antibiotics and Antifungal Medications

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.

Study: CBD Shows Potent Antibacterial Activity Against Drug-Resistant Enterococcus Strains

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.

Psilocybin Found to Significantly Reduce Depression in Cancer Patients, Meta-Analysis Shows

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.

Study: Psilocybin Treatment May Benefit Those With PTSD

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.

Marijuana Extracts Rich in CBC and THC Show Anti-Cancer Activity Against Bladder Tumors, Says Study

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.

Clinical Trial Finds Cannabis Oil Matches Lorazepam for Treating Insomnia, Improves Quality of Life

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.

Study: CBD May Help Overcome Drug Resistance in Leukemia Cells

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.

Study: Medical Cannabinoids Show Broad Neuroprotective Effects in Ischemic Stroke Models

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.

Study: CBD Reduces Neuroinflammation Linked to Long COVID by Modulating Brain Cell Signaling

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.

CBD Improves Cognitive Recovery After Traumatic Brain Injury by Blocking Neuronal Oxidative Stress, Study Finds

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.

Cannabidiol Shows Promise in Easing Benzodiazepine Withdrawal Symptoms, Study Finds

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.

Study: CBD Triggers Cancer Cell Death and Suppresses Melanoma Spread Through Epigenetic Pathway

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.

Medical Cannabis and Depression/Anxiety

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.

Study: Young Adults Say Marijuana Enhances Pleasure, Connection and Confidence During Sex

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.

Study: Lesser-Known Marijuana Compounds Like CBDV and CBG Can Reduce Inflammation, Especially When Combined

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.

Study: CBD May Slow Aging in Stem Cells Used for Regenerative Medicine

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.

CBD Reduces Bacteria That Causes Gum Disease, Finds New Lab Study

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.

Study: CBD Reduced Bladder Pain and Inflammation in Animal Model of Interstitial Cystitis

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

Study: Cannabis Extract Triggered Cell Death and Reduced Invasion in Human Breast Cancer Cells

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

Randomized Controlled Trial Finds CBD May Reduce Anxiety and Perceived Effort in Runners

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.