Microbiota & the Endocannabinoid System

Science continues to improve its understanding of how the endocannabinoid (EC) system modulates human health, even when it is not being studied in academic journals. The gut microbiome is a good example.

Recent studies from China may help to change this by identifying the specific gut microbiota that can have health effects through changes in the Endocannabinoid System (ECS). 

The gut microbiome has played a major role in the health of humans. The large intestine is home to tens or hundreds of trillions in bacteria, archaea fungi and viruses. These microbes have an impact on many aspects of health including digestion, metabolism, immunity, brain health and mental function, metabolic health, cardiovascular health and more.

It is not well-known that the ECS can play a role in mediating such complex relationships. Preclinical evidence from animal and lab models suggests that crosstalk between the ECS and gut microbiota – sometimes called the “microbiome-endocannabinoid axis” – could help explain much of what we now know about how diet, gut microbiome, and health are inextricably linked.

Protective against atherosclerosis

Atherosclerosis is one of the clinical diagnoses already linked to the microbiome of the gut. Dietary fat, cholesterol, or other substances can build up on the walls of the arteries and form hard plaques. These plaques restrict blood circulation and increase the risks of heart attack and coronary heart disease. 

A study published in the Journal Circulation The mice tested showed that a certain gut bacterium, called Akkermansia muciniphila (A. muciniphila(protects against atherosclerosis through altering metabolic processes. Other laboratory and animals studies have suggested that A. muciniphila production in the gut is promoted by a high-fiber diet rich in polyphenols from foods like berries, grapes, cranberries, pomegranate, cocoa, and green tea – and impaired by a traditional western diet high in sugar and ultra-processed foods.

Researchers have recently investigated the role of the endocannabinoid in mediating these effects, given its concentration in gastrointestinal tracts and greater role in the body as a homeostasis regulator.

Learn more about the benefits of A. muciniphila A team of Chinese researchers measured the systemic inflammation and aortic plaque in mice that were fed a high fat diet.

The CB2 connector

The mice that received the subsequent supplementation with A. muciniphila The results of the study were superior to those that did not. 

This is in line with previous research. What the researchers did after that, as reported in an article published in The Scientist in June 2026. Journal of Functional FoodsThe science of demonstrating that A. muciniphila’s beneficial effect was associated with elevated blood levels of the endocannabinoids anandamide (AEA) and 2-arachidonoylglycerol (2-AG).

Researchers tested the association by conducting additional experiments. The researchers then tested this association through additional experiments. A. muciniphilaThe authors note that CB2 antagonists abolished the protective effects, leading to an increase in plaques and a higher expression of vascular adhesive molecules. 

The findings are positioned A. muciniphila They conclude that ECS and CB2-dependent signals are “potent” functional foods for the prevention atherosclerosis.

Friendly gut bacteria against Alzheimer’s 

Similar connections were made in another recent paper from China. Researchers from Wenzhou Medical University published a paper in the journal The Journal of Medical Sciences in May. Journal of Integrative Neuroscience Focusing on the bacteria Lactobacillus mucosae. Found in the gastrointestinal tracts of humans and animals. L. mucosae It is a “friendly” bacteria that breaks down sugars to produce lactic acid. 

Researchers studied the effects of ethanol on energy production but not its role. L. mucosaeThe neuroprotective properties of, first proposed in previous studies, such as a study published in 2023, have been shown to be beneficial in Alzheimer’s. Nutrients.

Researchers in China treated mice for 4 weeks with L. mucosaeThen, analyzed various markers in a mouse Alzheimer’s model. The results showed that treatment with L. mucosae as a probiotic significantly decreased cognitive impairment, neuronal damage, amyloid-β deposition, and Tau phosphorylation.

The researchers also measured the expression of CB2 cannabinoid receptor and oxidative stress, a marker of neuronal damages associated with Alzheimer’s. They found that the CB2 receptor was responsible for the reduction in oxidative damage. 

These results led the authors to conclude that L. mucosae This bacterium, which is a novel probiotic treatment, confers neuroprotection on a mouse Alzheimer model via CB2-mediated pathways.

A high-fiber diet

As with A. muciniphila L. mucosae A high-fiber diet promotes the growth of beneficial bacteria in the gut. Researchers are looking at ways to support certain gut microbiotas directly with targeted supplements. 

It is possible that increased production of beneficial bacteria could have a positive impact on health in many areas, given the importance of gut microbiome to human health. 

And behind the scenes — underlying it all whether acknowledged or not — is the endocannabinoid system. 

Nate Seltenrich, a journalist and editor from the San Francisco Bay Area, has covered a wide range of topics, including cannabis, psychedelics and the health effects caused by environmental pollutants.

*

Sources:

Li, Jin, A Lin, Shaoqiang, Vanhoutte, Paul M, Woo, Connie W, Xu, Aimin. Akkermansia Mutinophila Protects Against Atherosclerosis through Preventing Endotoxemia Induced Inflammation. J Circulation 115.019645. doi:10.1161/CIRCULATIONAHA 

Weixi Wang Chenchen Feng Yi Lou Chu Liu Guilin Chang Kan Xu Weiying Ren Man Luo Yu Hu Lin Zhu Akkermansia mutinphila inhibits high-fat diet induced atherosclerosis via regulation of the enddocannabinoid. Journal of Functional Foods, Volume 141, 2026, 107325, ISSN 1756-4646, https://doi.org/10.1016/j.jff.2026.107325.

Kong Y, Lv X, Yang Y, Li Q, Dai C, Lin X, Liu J, Li J. Lactobacillus mucosae Reduces Neuronal Oxidative Stress in Alzheimer’s Disease via the Regulation of CB2 Signaling. J Integr Neurosci. 2026 May 19. doi: 10.31083/JIN48598. PMID: 42216640.

Ma X. Kim JK. Shin YJ. Son YH. Lee DY. Park HS. Kim DH. Alleviation of Cognitive Impairment-like Behaviors, Neuroinflammation, Colitis, and Gut Dysbiosis in 5xFAD Transgenic and Aged Mice by Lactobacillus mucosae and Bifidobacterium longum. Nutrients. Nutrients. PMID: 37571319; PMCID: PMC10421059.

Sponsored Content

This informative article is brought to you by Gen-Europa →