Does cannabis help or harm the immune system?

Cannabis is now recognized for the benefits it offers in managing certain medical conditions. As research on the Cannabis As this field evolves, consumers are becoming increasingly aware of the therapeutic potential of cannabinoids in the treatment of specific diseases.

But how does cannabis affect the immune system as a whole? Does cannabis weaken or strengthen the immune system? Can frequent cannabis use make people more vulnerable to infections or contagious diseases?

Historically, this issue has not attracted much interest from scientists. Current research suggests that cannabis may reduce the effectiveness of the immune system. While this may be beneficial for people with autoimmune diseases, it could be harmful to people with a healthy immune system.

What is the immune system?

The immune system is one of the body’s most sophisticated networks, composed of specialized cells and organs that work together to fight pathogens and infections, thereby protecting the body’s health and homeostasis.

The immune system is multifaceted, and its main components that actively fight infection include white blood cells, the complement system, antibodies, the lymphatic system, the spleen, the thymus, and the bone marrow; however, we will focus primarily on white blood cells.

White blood cells store memories of every microbe previously defeated by the immune system. This memory enables the rapid detection and elimination of infections the body has already encountered. The immune system is also responsible for detecting and eradicating defective cells.

Our understanding of how cannabis interacts with specific components of the immune system is limited. Although some research explores the effects of cannabinoids on white blood cell counts and the lymphatic system, we know less about the impact of cannabis on the thymus or the complement system.

Cannabis, the Endocannabinoid System, and the Immune System

There is a connection between the endocannabinoid system (ECS) and the immune system. The ECS is generally considered one of the immune system’s gatekeepers, preventing the onset of overwhelming inflammatory responses that can lead to disease. The ECS can also influence the function of immune cells.

The CB1 and CB2 receptors of the endocannabinoid system modulate the effects of cannabis on the immune system. The two main cannabinoids, the THC and CBD appear to have distinct effects on the immune system due to their unique interactions with cannabinoid receptors. A extensive literature suggests that cannabinoids affect the functions of most types of immune cells.

A 2020 Academic Journal has shown that the CBD suppresses certain inflammatory responses in the immune system and can induce cell death in immune cells. The death of immune cells is not always a bad thing. It is part of the cell life cycle and helps protect a person by reducing inflammatory reactions.

Like CBD, THC also suppresses immune activity, thereby reducing inflammatory responses. It also has been demonstrated that THC impairs the function of the immune cells responsible for antimicrobial activity.

How does cannabis affect the immune system?

Studies linking cannabis to the immune system often focus on the immunomodulatory or immunosuppressive effects of cannabis. Immunomodulation refers to any therapy that alters the immune system’s response. When cannabis suppresses the expression of certain aspects of the immune system, this form of modulation is known as immunosuppression, which can be beneficial if the immune system is dysregulated.

A study published in 2017 indicated that CBD and THC have an immunomodulatory effect on the human intestinal lymphatic system, the primary site for immune cells. The lymphatic system also contains more than half of the body’s lymphocytes, white blood cells that play a vital role in seeking out and destroying foreign cells or substances that have infiltrated the body.

The study authors found that oral administration of CBD and THC resulted in extremely high levels of cannabinoids in the intestinal lymphatic system: CBD concentrations in lymphatic cells were 250 times higher than in plasma, while THC concentrations in lymphatic cells were 100 times higher than in plasma.

For people with autoimmune diseases, cannabis can thus reach higher concentrations in the lymphatic system and more effectively suppress harmful inflammatory immune responses.

The Benefits and Drawbacks of Cannabis as an Immunosuppressant

Although the immunosuppressive properties of cannabis may be beneficial to some patients with autoimmune diseases, they can cause problems for other cannabis users.

Research conducted in 2003 Studies conducted on healthy volunteers suggest that cannabis may suppress immune function, resulting in a decrease in the number of pro-inflammatory cells and an increase in the number of anti-inflammatory cells. These changes were associated with a significant reduction in white blood cell function, and impaired white blood cell function may indicate a reduced ability to fight infections. Regular cannabis users also had lower levels of natural killer cells, which limit the spread of tumors and microbial infections.

The study also indicated that there may be a dose-response relationship between cannabis use over the course of a person’s lifetime and a decrease in certain immune system markers, meaning that those who use cannabis regularly may be more susceptible to the progression of an infectious disease.

What about the effects of cannabis on people with severely compromised immune systems? Unfortunately, cannabis may reduce significantly reduce the number of anti-infectious cells in people undergoing chemotherapy. This suppressive response may further exacerbate the harmful effects of chemotherapy on the immune systems of people with cancer.

Research on HIV-positive individuals and those with AIDS—who are particularly vulnerable to infections—indicates, however, that there is no solid evidence that cannabis negatively affects immune function.

Instead, the The results suggest that cannabis use among HIV-positive patients may strengthen the immune system by leading to a statistically significant reduction in viral load and an increase in CD4 cells. CD4 cells can be considered a marker of the immune system’s strength.

While existing research allows us to gather information about cannabis and the immune system, we need more rigorous data to paint a broader picture. According to the last report According to the 2017 report by the National Academies of Sciences, Engineering, and Medicine (NASEM), research on the effects of cannabis or cannabinoid-based medications on the human immune system is insufficient to draw definitive conclusions.