Cannabinoid use is linked to both pro- and anti-inflammatory effects, massive review finds
A new systematic review published in Brain, Behavior, and Immunity suggests that using cannabinoids does not have a single, straightforward effect on the human immune system. Instead, regular use tends to be associated with concurrent increases in both pro-inflammatory and anti-inflammatory biological markers. These findings provide evidence that cannabis products might modulate the immune system in ways that require more nuance to fully understand. Cannabis use is rising globally, driven by shifting legal policies and a changing public perception of its safety. At the same time, medical science views cannabis through a divided lens. Certain components are being explored as treatments for pain and epilepsy, while regular use is also linked to cognitive and psychiatric risks. Preclinical studies in animals or isolated cells have often indicated that cannabinoids might reduce inflammation. In these laboratory settings, cannabinoids typically suppress immune cell activation. This early evidence led many to view cannabis as a broadly anti-inflammatory substance. However, the translation of these laboratory findings to human biology has been incredibly inconsistent. Some previous human studies reported increases in …









